Optical image capturing system

ABSTRACT

A six-piece optical lens for capturing image and a six-piece optical module for capturing image are provided. In the order from an object side to an image side, the optical lens along the optical axis includes a first lens element with refractive power, a second lens element with refractive power, a third lens element with refractive power, a fourth lens element with refractive power, a fifth lens element with refractive power and a sixth element lens with refractive power. At least one of the image-side surface and object-side surface of each of the six lens elements is aspheric. The optical lens can increase aperture value and improve the imagining quality for use in compact cameras.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority from Taiwan Patent Application No. 105114959, filed on May 13, 2016, in the Taiwan Intellectual Property Office, the content of which is hereby incorporated by reference in its entirety for all purposes.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present disclosure relates to an optical image capturing system, and more particularly to a compact optical image capturing system which can be applied to electronic products.

2. Description of the Related Art

In recent years, with the rise of portable electronic devices having camera functionalities, the demand for an optical image capturing system is raised gradually. The image sensing device of ordinary photographing camera is commonly selected from charge coupled device (CCD) or complementary metal-oxide semiconductor sensor (CMOS Sensor). In addition, as advanced semiconductor manufacturing technology enables the minimization of pixel size of the image sensing device, the development of the optical image capturing system directs towards the field of high pixels. Therefore, the requirement for high imaging quality is rapidly raised.

The traditional optical image capturing system of a portable electronic device comes with different designs, including a four-piece lens design or a five-piece lens design. However, because of the higher pixels in portable electronic devices with camera and the requirement for a large aperture of an end user, e.g. functionalities of micro filming and night view, the optical image capturing system in prior arts cannot meet the advanced requirement of photography and filming.

Therefore, how to effectively increase the amount of light admitted into the optical lenses, and further improves the quality of the formed image has become quite an important issue.

SUMMARY OF THE INVENTION

The aspect of embodiment of the present disclosure directs to an optical image capturing system and an optical image capturing lens which use combination of refractive powers, convex and concave surfaces of six-piece optical lenses (the convex or concave surface in the disclosure denotes the change of geometrical shape of an object-side surface or an image-side surface of each lens element at different heights from an optical axis) to increase the amount of light admitted into the optical image capturing system, and to improve quality of image formation, so as to be applied to minimized electronic products.

The terminologies together with their numerals for the structural elements and parameters related to the embodiments of the present invention are given in the following paragraphs for reference in subsequent illustrations:

As shown in FIGS. 7A, 7B and 7C, the optical image capturing system may include an image sensing module (not illustrated), the image sensing module includes a substrate and an image sensor on the substrate. The optical image capturing system may further include a lens positioning element 794 which is hollow, in order to accommodate any lens element and to align the lens elements along the optical axis. The lens positioning element is disposed with an object-side end 796 and an image-side end 798. The object-side end 796 is adjacent to the object side and is disposed with a first opening 7962, whereas the image-side end 798 is adjacent to the image side and is disposed with a second opening 7982. The outer wall of the lens positioning element 794 includes two tangent planes 799, each of the tangent planes 799 has a sprue mark 7992. The inner diameter of the aforementioned first opening 7962 is denoted by OD and the inner diameter of the second opening 7982 is denoted by ID, the following condition is satisfied: 0.1≦OD/ID<10. The minimum thickness of the object-side end 796 is denoted by OT, whereas the minimum thickness of the image-side end 798 is denoted by IT, the following condition is satisfied: 0.1≦OT/IT≦10.

As shown in FIGS. 8A, 8B and 8C, the optical image capturing system may include an image sensing module (not illustrated), the image sensing module includes a substrate and an image sensor on the substrate. The optical image capturing system may further include a lens positioning element 894 which is hollow, in order to accommodate any lens element and align the lens elements along the optical axis. The lens positioning element is disposed with an object-side end 896 and an image-side end 898. The object-side end 896 is adjacent to the object side and is disposed with a first opening 8962, whereas the image-side end 898 is adjacent to the image side and is disposed with a second opening 8982. The outer wall of the lens positioning element 894 includes three tangent planes 899, and each of the tangent planes 899 has a sprue mark 8992. The inner diameter of the aforementioned first opening 8962 is denoted by OD and the inner diameter of the second opening 8982 is denoted by ID, the following condition is satisfied: 0.1≦OD/ID<10. The minimum thickness of the object-side end 896 is denoted by OT, whereas the minimum thickness of the image-side end 898 is denoted by IT, the following condition is satisfied: 0.1≦OT/IT≦10.

The term and its definition for the lens element parameter in the embodiment of the present invention are shown as below for further reference.

The Lens Element Parameter Related to the Length or the Height of the Lens Element

The maximum height for image formation of the optical image capturing system is denoted by HOI. The height of the optical image capturing system is denoted by HOS. The distance from the object-side surface of the first lens element to the image-side surface of the sixth lens element is denoted by InTL. The distance from an aperture stop (aperture) of the optical image capturing system to the image plane is denoted by InS. The distance from the first lens element to the second lens element is denoted by In12 (example). The central thickness of the first lens element of the optical image capturing system on the optical axis is denoted by TP1 (example).

The Lens Element Parameter Related to the Material in the Lens Element

The Abbe number of the first lens element in the optical image capturing system is denoted by NA1 (example). The refractive index of the first lens element is denoted by Nd1 (example).

The Lens Element Parameter Related to the Angle of View

The angle of view is denoted by AF. Half of the angle of view is denoted by HAF. A major ray angle is denoted by MRA.

The Lens Element Parameter Related to the Exit/Entrance Pupil

The entrance pupil diameter of the optical image capturing system is denoted by HEP. The maximum effective half diameter (EHD) of any surface of a single lens element refers to a perpendicular height between the optical axis and an intersection point; the intersection point is where the incident ray with the maximum angle of view passes through the outermost edge of the entrance pupil, and intersects with the surface of the lens element. For example, the maximum effective half diameter of the object-side surface of the first lens element is denoted by EHD11. The maximum effective half diameter of the image-side surface of the first lens element is denoted by EHD12. The maximum effective half diameter of the object-side surface of the second lens element is denoted by EHD21. The maximum effective half diameter of the image-side surface of the second lens element is denoted by EHD22. The maximum effective half diameters of any surface of other lens elements in the optical image capturing system are denoted in the similar way.

The Lens Element Parameter Related to the Surface Arc Length of the Lens Element and the Outline of Surface

The length of the maximum effective half diameter outline curve at any surface of a single lens element refers to an arc length of a curve, wherein the curve starts from an axial point on the surface of the lens element, traces along the surface outline of the lens element, and ends at the intersection point that defines the maximum effective half diameter; this arc length is denoted as ARS. For example, the length of the maximum effective half diameter outline curve of the object-side surface of the first lens element is denoted as ARS11. The length of the maximum effective half diameter outline curve of the image-side surface of the first lens element is denoted as ARS12. The length of the maximum effective half diameter outline curve of the object-side surface of the second lens element is denoted by ARS21. The length of the maximum effective half diameter outline curve of the image-side surface of the second lens element is denoted as ARS22. The lengths of the maximum effective half diameter outline curve of any surface of other lens elements in the optical image capturing system are denoted in the similar way.

The length of ½ entrance pupil diameter (HEP) outline curve of any surface of a single lens element refers to an arc length of curve, wherein the curve starts from an axial point on the surface of the lens element, travels along the surface outline of the lens element, and ends at a coordinate point on the surface where the vertical height from the optical axis to the coordinate point is equivalent to ½ entrance pupil diameter; and the arc length is denoted as ARE. For example, the length of the ½ entrance pupil diameter (HEP) outline curve of the object-side surface of the first lens element is denoted as ARE11. The length of the ½ entrance pupil diameter (HEP) outline curve of the image-side surface of the first lens element is denoted as ARE12. The length of the ½ HEP outline curve of the object-side surface of the second lens element is denoted as ARE21. The length of the ½ HEP outline curve of the image-side surface of the second lens element is denoted as ARE22. The lengths of the ½ HEP outline curve of any surface of the other lens elements in the optical image capturing system are denoted in the similar way.

The Lens Element Parameter Related to the Surface Depth of the Lens Element

The distance paralleling an optical axis, from an axial point on the object-side surface of the sixth lens element, to the intersection point that defines the maximum effective half diameter of the object-side surface of the sixth lens element, is denoted by InRS61 (depth of the EHD). The distance paralleling an optical axis, from an axial point on the image-side surface of the sixth lens element, to the intersection point that defines the maximum effective half diameter of the image-side surface of the sixth lens element, is denoted by InRS62 (depth of the EHD). The depths (sinkage values) of the EHD of the object-side or image-side surface of other lens elements are denoted in the similar manner.

The Lens Element Parameter Related to the Shape of the Lens Element

The critical point C is a point on a surface of a specific lens element, and the tangent plane to the surface at that point is perpendicular to the optical axis, wherein the point cannot be the axial point on that specific surface of the lens element. Therefore, the perpendicular distance between the critical point C51 on the object-side surface of the fifth lens element and the optical axis is HVT51 (example). The perpendicular distance between a critical point C52 on the image-side surface of the fifth lens element and the optical axis is HVT52 (example). The perpendicular distance between the critical point C61 on the object-side surface of the sixth lens element and the optical axis is HVT61 (example). The perpendicular distance between a critical point C62 on the image-side surface of the sixth lens element and the optical axis is HVT62 (example). The perpendicular distances between the critical point on the image-side surface or object-side surface of other lens elements and the optical axis are denoted in similar fashion.

The inflection point on object-side surface of the sixth lens element that is nearest to the optical axis is denoted by IF611, and the sinkage value of that inflection point IF611 is denoted by SGI611 (example). The sinkage value SGI611 is a horizontal distance paralleling the optical axis, which is from an axial point on the object-side surface of the sixth lens element to the inflection point nearest to the optical axis on the object-side surface of the sixth lens element. The distance perpendicular to the optical axis between the inflection point IF611 and the optical axis is HIF611 (example). The inflection point on image-side surface of the sixth lens element that is nearest to the optical axis is denoted by IF621, and the sinkage value of that inflection point IF621 is denoted by SGI621 (example). The sinkage value SGI621 is a horizontal distance paralleling the optical axis, which is from the axial point on the image-side surface of the sixth lens element to the inflection point nearest to the optical axis on the image-side surface of the sixth lens element. The distance perpendicular to the optical axis between the inflection point IF621 and the optical axis is HIF621 (example).

The inflection point on object-side surface of the sixth lens element that is second nearest to the optical axis is denoted by IF612, and the sinkage value of that inflection point IF612 is denoted by SGI612 (example). The sinkage value SGI612 is a horizontal distance paralleling the optical axis, which is from an axial point on the object-side surface of the sixth lens element to the inflection point nearest to the optical axis on the object-side surface of the sixth lens element. The distance perpendicular to the optical axis between the inflection point IF612 and the optical axis is HIF612 (example). The inflection point on image-side surface of the sixth lens element that is second nearest to the optical axis is denoted by IF622, and the sinkage value of that inflection point IF622 is denoted by SGI622 (example). The sinkage value SGI622 is a horizontal distance paralleling the optical axis, which is from the axial point on the image-side surface of the sixth lens element to the inflection point second nearest to the optical axis on the image-side surface of the sixth lens element. The distance perpendicular to the optical axis between the inflection point IF622 and the optical axis is HIF622 (example).

The inflection point on object-side surface of the sixth lens element that is third nearest to the optical axis is denoted by IF613, and the sinkage value of that inflection point IF613 is denoted by SGI613 (example). The sinkage value SGI613 is a horizontal distance paralleling the optical axis, which is from an axial point on the object-side surface of the sixth lens element to the inflection point third nearest to the optical axis on the object-side surface of the sixth lens element. The distance perpendicular to the optical axis between the inflection point IF613 and the optical axis is HIF613 (example). The inflection point on image-side surface of the sixth lens element that is third nearest to the optical axis is denoted by IF623, and the sinkage value of that inflection point IF623 is denoted by SGI623 (example). The sinkage value SGI623 is a horizontal distance paralleling the optical axis, which is from the axial point on the image-side surface of the sixth lens element to the inflection point third nearest to the optical axis on the image-side surface of the sixth lens element. The distance perpendicular to the optical axis between the inflection point IF623 and the optical axis is HIF623 (example).

The inflection point on object-side surface of the sixth lens element that is fourth nearest to the optical axis is denoted by IF614, and the sinkage value of that inflection point IF614 is denoted by SGI614 (example). The sinkage value SGI614 is a horizontal distance paralleling the optical axis, which is from an axial point on the object-side surface of the sixth lens element to the inflection point fourth nearest to the optical axis on the object-side surface of the sixth lens element. The distance perpendicular to the optical axis between the inflection point IF614 and the optical axis is HIF614 (example). The inflection point on image-side surface of the sixth lens element that is fourth nearest to the optical axis is denoted by IF624, and the sinkage value of that inflection point IF624 is denoted by SGI624 (example). The sinkage value SGI624 is a horizontal distance paralleling the optical axis, which is from the axial point on the image-side surface of the sixth lens element to the inflection point fourth nearest to the optical axis on the image-side surface of the sixth lens element. The distance perpendicular to the optical axis between the inflection point IF624 and the optical axis is HIF624 (example).

The inflection points on the object-side surface or the image-side surface of the other lens elements and the perpendicular distances between them and the optical axis, or the sinkage values thereof are denoted in the similar way described above.

The Lens Element Parameter Related to the Aberration

Optical distortion for image formation in the optical image capturing system is denoted by ODT. TV distortion for image formation in the optical image capturing system is denoted by TDT. Furthermore, the degree of aberration offset within the range of 50% to 100% field of view of the formed image can be further illustrated. The offset of the spherical aberration is denoted by DFS. The offset of the coma aberration is denoted by DFC.

The transverse aberration of the edge of the aperture is defined as STOP Transverse Aberration (STA), which assesses the specific performance of the optical image capturing system. The tangential fan or sagittal fan may be applied to calculate the STA of any fields of view, and in particular, to calculate the STAs of the longest operation wavelength (e.g. 650 nm) and the shortest operation wavelength (e.g. 470 nm), which serve as the standard to indicate the performance. The aforementioned direction of the tangential fan can be further defined as the positive (overhead-light) and negative (lower-light) directions. The STA of the max operation wavelength is defined as the distance between the position of the image formed when the max operation wavelength passing through the edge of the aperture strikes a specific field of view of the image plane and the image position of the reference primary wavelength (e.g. wavelength of 555 nm) on specific field of view of the image plane. Whereas the STA of the shortest operation wavelength is defined as the distance between the position of the image formed when the shortest operation wavelength passing through the edge of the aperture strikes a specific field of view of the image plane and the image position of the reference primary wavelength on a specific field of view of the image plane. The criteria for the optical image capturing system to be qualified as having excellent performance may be set as: both STA of the incident longest operation wavelength and the STA of the incident shortest operation wavelength at 70% of the field of view of the image plane (i.e. 0.7 HOI) have to be less than 100 μm or even less than 80 μm.

The optical image capturing system has a maximum image height HOI on the image plane perpendicular to the optical axis. A transverse aberration of the longest operation wavelength of visible light of a positive direction tangential fan of the optical image capturing system passing through an edge of the entrance pupil and incident at the position of 0.7 HOI on the image plane is denoted as PLTA. A transverse aberration of the shortest operation wavelength of visible light of the positive direction tangential fan of the optical image capturing system passing through the edge of the entrance pupil and incident at the position of 0.7 HOI on the image plane is denoted as PSTA. A transverse aberration of the longest operation wavelength of visible light of a negative direction tangential fan of the optical image capturing system passing through the edge of the entrance pupil and incident at the position of 0.7 HOT on the image plane is denoted as NLTA. A transverse aberration of the shortest operation wavelength of visible light of a negative direction tangential fan of the optical image capturing system passing through the edge of the entrance pupil and incident at the position of 0.7 HOI on the image plane is denoted as NSTA. A transverse aberration of the longest operation wavelength of visible light of a sagittal fan of the optical image capturing system passing through the edge of the entrance pupil and incident at the position of 0.7 HOI on the image plane denoted as SLTA. A transverse aberration of the shortest operation wavelength of visible light of the sagittal fan of the optical image capturing system passing through the edge of the entrance pupil and incident at the position of 0.7 HOI on the image plane is denoted as SSTA.

The disclosure provides an optical image capturing system, the object-side surface or the image-side surface of the sixth lens element may have inflection points, such that the angle of incident light from each field of view to the sixth lens element can be adjusted effectively and the optical distortion and the TV distortion can be corrected as well. Besides, the surfaces of the sixth lens element may be endowed with better capability in adjusting the optical path, which yields better image quality.

The disclosure provides an optical image capturing system, in the order from an object side to an image side, including a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a lens positioning element and an image plane. The lens positioning element is hollow to accommodate any lens elements and align the lens elements along the optical axis. The lens positioning element includes an object-side end and an image-side end. The object-side end is adjacent to the object side and is disposed with a first opening. The image-side end is adjacent to the image side and is disposed with a second opening. An outer wall of the lens positioning element includes at least two tangent planes which respectively have at least one sprue mark. The first lens element had refractive power. Focal lengths of the first through sixth lens elements are f1, f2, f3, f4, f5 and f6 respectively. The focal length of the optical image capturing system is f. The entrance pupil diameter of the optical image capturing system is HEP. A distance from an object-side surface of the first lens element to the image plane is HOS. The distance on the optical axis from the object-side surface of first lens element to the image-side surface of sixth lens element is denoted by InTL. Half of the maximum viewable angle of the optical image capturing system is denoted by HAF. An outline curve starting from an axial point on any surface of any one of those lens elements, tracing along the outline of the surface, and ending at a coordinate point on the surface that has a vertical height of ½ entrance pupil diameter from the optical axis, has a length denoted by ARE. The following conditions are satisfied: 1.0≦f/HEP≦10, 0 deg≦HAF≦150 deg, and 0.9≦2(ARE/HEP)≦2.0.

The disclosure further provides another optical image capturing system, in the order from an object side to an image side, including a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a lens positioning element and an image plane. The lens positioning element is hollow in order to accommodate any lens elements and align the lens elements along the optical axis. The lens positioning element includes an object-side end and an image-side end. The object-side end is adjacent to the object side and has a first opening. The image-side end is adjacent to the image side and has a second opening. The outer wall of the lens positioning element includes at least two tangent planes which respectively have at least one sprue mark. The first lens element has refractive power. The second lens element has refractive power. The third lens element has refractive power. The fourth lens element has refractive power. The fifth lens element has refractive power. The sixth lens element has refractive power. At least one lens element among the first through the sixth lens elements has at least one inflection point on at least one surface thereof. At least one lens element among the first lens element through the third lens element has positive refractive power. At least one lens element among the fourth lens element through the sixth lens element has positive refractive power. Focal lengths of the first through sixth lens elements are f1, f2, f3, f4, f5 and f6 respectively. The focal length of the optical image capturing system is f. The entrance pupil diameter of the optical image capturing system is HEP. The distance on the optical axis from an object-side surface of the first lens element to the image plane is HOS. The distance on the optical axis from the object-side surface of the first lens element to the image-side surface of the sixth lens element is InTL. Half of a maximum angle of view of the optical image capturing system is HAF. The outline curve starting from an axial point on any surface of any one of those lens elements, tracing along the outline of the surface, and ending at a coordinate point on the surface that has a vertical height of ½ entrance pupil diameter from the optical axis, has a length denoted by ARE. The following conditions are satisfied: 1.0≦f/HEP≦10, 0° (degree)≦HAF≦150° (deg), and 0.9≦2(ARE/HEP)≦2.0.

The disclosure provides yet another optical image capturing system, in the order from an object side to an image side, including a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a lens positioning element and an image plane. The lens positioning element is hollow to accommodate any lens elements and align the lens elements on the optical axis. The lens positioning element includes an object-side end and an image-side end. The object-side end is adjacent to the object side and has a first opening. The image-side end is adjacent to the image side and has a second opening. The outer wall of the lens positioning element includes at least three tangent planes which respectively have at least one sprue mark. There are six lens elements with refractive power in the optical image capturing system. The first lens element has refractive power. The second lens element has refractive power. The third lens element has refractive power. The fourth lens element has refractive power. The fifth lens element has refractive power. The sixth lens element has refractive power. At least one lens element among the first lens element through the sixth lens element has positive refractive power. At least one lens element among the first through the sixth lens elements has at least one inflection point on at least one surface thereof. The focal lengths of the first through sixth lens elements are f1, f2, f3, f4, f5 and f6 respectively. The focal length of the optical image capturing system is f. The entrance pupil diameter of the optical image capturing system is HEP. The distance on the optical axis from an object-side surface of the first lens element to the image plane is HOS. The distance on the optical axis from the object-side surface of the first lens element to the image-side surface of the sixth lens element is InTL. Half of a maximum angle of view of the optical image capturing system is HAF. The outline curve starting from an axial point on any surface of any one of those lens elements, tracing along the outline of the surface, and ending at a coordinate point on the surface that has a vertical height of ½ entrance pupil diameter from the optical axis, has a length denoted by ARE. The following conditions are satisfied: 1.0≦f/HEP≦10, 0° (degree)≦HAF≦150° (deg), and 0.9≦2(ARE/HEP)≦2.0.

The length of the outline curve of any surface of single lens element within the range of maximum effective half diameter affects its performance in correcting the surface aberration and the optical path difference between the rays in each field of view. The longer outline curve may lead to a better performance in aberration correction, but the difficulty of the production may become higher. Hence, the length of the outline curve (ARS) of any surface of a single lens element within the range of the maximum effective half diameter has to be controlled, and especially, the proportional relationship (ARS/TP) between the length of the outline curve (ARS) of the surface within the range of the maximum effective half diameter and the central thickness (TP) of the lens element to which the surface belongs on the optical axis has to be controlled. For example, the length of the maximum effective half diameter outline curve of the object-side surface of the first lens element is denoted as ARS11, and the central thickness of the first lens element on the optical axis is TP1, and the ratio between both of them is ARS11/TP1. The length of the maximum effective half diameter outline curve of the image-side surface of the first lens element is denoted as ARS12, and the ratio between ARS12 and TP1 is ARS12/TP1. The length of the maximum effective half diameter outline curve of the object-side surface of the second lens element is denoted as ARS21, and the central thickness of the second lens element on the optical axis is TP2, and the ratio between both of them is ARS21/TP2. The length of the maximum effective half diameter outline curve of the image-side surface of the second lens element is denoted as ARS22, and the ratio between ARS22 and TP2 is ARS22/TP2. The proportional relationships between the lengths of the maximum effective half diameter outline curve of any surface of the other lens elements and the central thicknesses of the lens elements to which the surfaces belong on the optical axis (TP) are denoted in the similar way.

The length of ½ entrance pupil diameter outline curve of any surface of a single lens element especially affects the performance of the surface in correcting the aberration in the shared region of each field of view, and the performance in correcting the optical path difference among each field of view. The longer outline curve may lead to a better function of aberration correction, but the difficulty in the production may become higher. Hence, the length of ½ entrance pupil diameter outline curve of any surface of a single lens element has to be controlled, and especially, the proportional relationship between the length of ½ entrance pupil diameter outline curve of any surface of a single lens element and the central thickness on the optical axis has to be controlled. For example, the length of the ½ entrance pupil diameter outline curve of the object-side surface of the first lens element is denoted as ARE11, and the central thickness of the first lens element on the optical axis is TP1, and the ratio thereof is ARE11/TP1. The length of the ½ entrance pupil diameter outline curve of the image-side surface of the first lens element is denoted as ARE12, and the central thickness of the first lens element on the optical axis is TP1, and the ratio thereof is ARE12/TP1. The length of the ½ entrance pupil diameter outline curve of the object-side surface of the first lens element is denoted as ARE21, and the central thickness of the second lens element on the optical axis is TP2, and the ratio thereof is ARE21/TP2. The length of the ½ entrance pupil diameter outline curve of the image-side surface of the second lens element is denoted as ARE22, and the central thickness of the second lens element on the optical axis is TP2, and the ratio thereof is ARE22/TP2. The ratios of the ½ HEP outline curves on any surface of the remaining lens elements of the optical image capturing system to the central thicknesses of that lens element can be computed in similar way.

The height of optical system (HOS) may be reduced to achieve the minimization of the optical image capturing system when |f1|>|f6|.

When |f2|+|f3|+|f4|+|f5| and |f1|+|f6| satisfy the aforementioned conditions, at least one of the second through fifth lens elements may have a weak positive refractive power or a weak negative refractive power. The weak refractive power indicates that an absolute value of the focal length of a specific lens element is greater than 10. When at least one of the second through fifth lens elements has the weak positive refractive power, the positive refractive power of the first lens element can be shared by it, such that the unnecessary aberration will not appear too early. On the contrary, when at least one of the second and third lens elements has the weak negative refractive power, the aberration of the optical image capturing system can be slightly corrected.

The sixth lens element may have negative refractive power, and the image-side surface thereof may be a concave surface. With this configuration, the back focal distance of the optical image capturing system may be shortened and the system may be minimized. Besides, at least one surface of the sixth lens element may possess at least one inflection point, which is capable of effectively reducing the incident angle of the off-axis rays, thereby further correcting the off-axis aberration.

BRIEF DESCRIPTION OF THE DRAWINGS

The detailed structure, operating principle and effects of the present disclosure will now be described in more details hereinafter with reference to the accompanying drawings that show various embodiments of the present disclosure as follows.

FIG. 1A is a schematic view of the optical image capturing system according to the first embodiment of the present invention.

FIG. 1B shows the longitudinal spherical aberration curves, astigmatic field curves, and optical distortion curve of the optical image capturing system in the order from left to right according to the first embodiment of the present invention.

FIG. 1C is a transverse aberration diagram of the longest operation wavelength and the shortest operation wavelength for tangential fan and sagittal fan, wherein the longest operation wavelength and the shortest operation wavelength pass through an edge of the entrance pupil and incident at the position of 0.7 HOI on the image plane, according to the first embodiment of the present invention.

FIG. 2A is a schematic view of the optical image capturing system according to the second embodiment of the present invention.

FIG. 2B shows the longitudinal spherical aberration curves, astigmatic field curves, and optical distortion curve of the optical image capturing system in the order from left to right according to the second embodiment of the present invention.

FIG. 2C is a transverse aberration diagram of the longest operation wavelength and the shortest operation wavelength for tangential fan and sagittal fan, wherein the longest operation wavelength and the shortest operation wavelength pass through an edge of the entrance pupil and incident at the position of 0.7 HOI on the image plane, according to the second embodiment of the present invention.

FIG. 3A is a schematic view of the optical image capturing system according to the third embodiment of the present invention.

FIG. 3B shows the longitudinal spherical aberration curves, astigmatic field curves, and optical distortion curve of the optical image capturing system in the order from left to right according to the third embodiment of the present invention.

FIG. 3C is a transverse aberration diagram of the longest operation wavelength and the shortest operation wavelength for tangential fan and sagittal fan, wherein the longest operation wavelength and the shortest operation wavelength pass through an edge of the entrance pupil and incident at the position of 0.7 HOI on the image plane, according to the third embodiment of the present invention.

FIG. 4A is a schematic view of the optical image capturing system according to the fourth embodiment of the present invention.

FIG. 4B shows the longitudinal spherical aberration curves, astigmatic field curves, and optical distortion curve of the optical image capturing system in the order from left to right according to the fourth embodiment of the present invention.

FIG. 4C is a transverse aberration diagram of the longest operation wavelength and the shortest operation wavelength for tangential fan and sagittal fan, wherein the longest operation wavelength and the shortest operation wavelength pass through an edge of the entrance pupil and incident at the position of 0.7 HOI on the image plane, according to the fourth embodiment of the present invention.

FIG. 5A is a schematic view of the optical image capturing system according to the fifth embodiment of the present invention.

FIG. 5B shows the longitudinal spherical aberration curves, astigmatic field curves, and optical distortion curve of the optical image capturing system in the order from left to right according to the fifth embodiment of the present invention.

FIG. 5C is a transverse aberration diagram of the longest operation wavelength and the shortest operation wavelength for tangential fan and sagittal fan, wherein the longest operation wavelength and the shortest operation wavelength pass through an edge of the entrance pupil and incident at the position of 0.7 HOI on the image plane, according to the fifth embodiment of the present invention.

FIG. 6A is a schematic view of the optical image capturing system according to the sixth embodiment of the present invention.

FIG. 6B shows the longitudinal spherical aberration curves, astigmatic field curves, and optical distortion curve of the optical image capturing system in the order from left to right according to the sixth embodiment of the present invention.

FIG. 6C is a transverse aberration diagram of the longest operation wavelength and the shortest operation wavelength for tangential fan and sagittal fan, wherein the longest operation wavelength and the shortest operation wavelength pass through an edge of the entrance pupil and incident at the position of 0.7 HOI on the image plane, according to the sixth embodiment of the present invention.

FIG. 7A is the perspective side view of the lens positioning element of the first embodiment of the present invention.

FIG. 7B is the plan view of the lens positioning element of the first embodiment of the present invention, which is taken in the direction from the second opening at the image-side end to the first opening of the object-side end. The outer wall of the lens positioning element is disposed with two tangent planes, and each tangent plane has a sprue mark.

FIG. 7C is the sectional view of the lens positioning element of the first embodiment of the present invention.

FIG. 8A is the perspective side view illustrating the lens positioning elements of the second to sixth embodiments of the present invention.

FIG. 8B is the plan view illustrating the lens positioning elements of the second to sixth embodiments of the present invention, which is taken in the direction from the second opening at the image-side end to the first opening of the object-side end. The outer wall of the lens positioning element is disposed with three tangent planes, and each tangent plane has a sprue mark.

FIG. 8C is the sectional view of the lens positioning elements of the second to sixth embodiments of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

Reference will now be made in detail to the exemplary embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. Therefore, it is to be understood that the foregoing is illustrative of exemplary embodiments and is not to be construed as limited to the specific embodiments disclosed, and that modifications to the disclosed exemplary embodiments, as well as other exemplary embodiments, are intended to be included within the scope of the appended claims. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the inventive concept to those skilled in the art. The relative proportions and ratios of elements in the drawings may be exaggerated or diminished in size for the sake of clarity and convenience in the drawings, and such arbitrary proportions are only illustrative and not limiting in any way. The same reference numbers are used in the drawings and the description to refer to the same or like parts.

It will be understood that, although the terms ‘first’, ‘second’, ‘third’, etc., may be used herein to describe various elements, these elements should not be limited by these terms. The terms are used only for the purpose of distinguishing one component from another component. Thus, a first element discussed below could be termed a second element without departing from the teachings of embodiments. As used herein, the term “or” includes any and all combinations of one or more of the associated listed items.

The optical image capturing system, in the order from an object side to an image side, includes a first, second, third, fourth, fifth and sixth lens elements with refractive powers and an image plane. The optical image capturing system may further include an image sensing device which is disposed on the image plane.

The optical image capturing system may use three sets of operation wavelengths, which are 486.1 nm, 587.5 nm and 656.2 nm, respectively, wherein 587.5 nm is served as the primary reference wavelength in order to obtain technical features of the optical system. The optical image capturing system may also use five sets of wavelengths which are 470 nm, 510 nm, 555 nm, 610 nm and 650 nm, respectively, wherein 555 nm is served as the primary reference wavelength in order to to obtain technical features of the optical system.

The ratio of the focal length f of the optical image capturing system to a focal length fp of each lens element with positive refractive power is PPR. A ratio of the focal length f of the optical image capturing system to a focal length fn of each lens element with negative refractive power is NPR. A sum of the PPR of all lens elements with positive refractive powers is ΣPPR. The sum of the NPR of all lens elements with negative refractive powers is ΣNPR. The total refractive power and the total length of the optical image capturing system can be controlled easily when following conditions are satisfied: 0.5≦ΣPPR/|ΣNPR|≦15. Preferably, the following condition may be satisfied: 1≦ΣPPR/|ΣNPR|≦3.0.

The optical image capturing system may further include an image sensing device that is disposed on an image plane. Half of a diagonal of an effective detection field of the image sensing device (imaging height or the maximum image height of the optical image capturing system) is HOI. A distance on the optical axis from the object-side surface of the first lens element to the image plane is HOS. The following conditions are satisfied: HOS/HOI≦10 and 0.5≦HOS/f≦10. Preferably, the following conditions may be satisfied: 1≦HOS/HOI≦5 and 1≦HOS/f≦7. With this configuration, the size of the optical image capturing system can be kept small, such that a lightweight electronic product is able to accommodate it.

In addition, in the optical image capturing system of the disclosure, according to different requirements, at least one aperture stop may be arranged for reducing stray light and improving the imaging quality.

In the optical image capturing system of the disclosure, the aperture stop may be a front or middle aperture. The front aperture is the aperture stop between a photographed object and the first lens element. The middle aperture is the aperture stop between the first lens element and the image plane. If the aperture stop is the front aperture, a longer distance between the exit pupil and the image plane of the optical image capturing system can be formed, such that more optical elements can be disposed in the optical image capturing system and the efficiency of the image sensing device in receiving image can be improved. If the aperture stop is the middle aperture, the angle of view of the optical image capturing system can be expended, such that the optical image capturing system has the same advantage that is owned by wide angle cameras. A distance from the aperture stop to the image plane is InS. The following condition is satisfied: 0.2≦InS/HOS≦1.1. Hereby, the size of the optical image capturing system can be kept small without sacrificing the feature of wide angle of view.

In the optical image capturing system of the disclosure, a distance from the object-side surface of the first lens element to the image-side surface of the sixth lens element is InTL. The sum of central thicknesses of all lens elements with refractive power on the optical axis is ΣTP. The following condition is satisfied: 0.1≦ΣTP/InTL≦0.9. Hereby, the contrast ratio for the image formation in the optical image capturing system can be improved without sacrificing the defect-free rate during the manufacturing of the lens element, and a proper back focal length is provided to accommodate other optical components in the optical image capturing system.

The curvature radius of the object-side surface of the first lens element is R1. The curvature radius of the image-side surface of the first lens element is R2. The following condition is satisfied: 0.001≦|R1/R2|≦20. Hereby, the first lens element may have a suitable magnitude of positive refractive power, so as to prevent the longitudinal spherical aberration from increasing too fast. Preferably, the following condition may be satisfied: 0.01≦|R1/R2|<10.

The curvature radius of the object-side surface of the sixth lens element is R11. The curvature radius of the image-side surface of the sixth lens element is R12. The following condition is satisfied: −7<(R11−R12)/(R11+R12)<50. This configuration is beneficial to the correction of the astigmatism generated by the optical image capturing system.

The distance between the first lens element and the second lens element on the optical axis is IN12. The following condition is satisfied: IN12/f≦3.0. Hereby, the chromatic aberration of the lens elements can be mitigated, such that their performance is improved.

The distance between the fifth lens element and the sixth lens element on the optical axis is IN56. The following condition is satisfied: IN56/f≦0.8. Hereby, the chromatic aberration of the lens elements can be mitigated, such that their performance is improved.

Central thicknesses of the first lens element and the second lens element on the optical axis are TP1 and TP2, respectively. The following condition is satisfied: 0.1≦(TP1+IN12)/TP2≦10. Hereby, the sensitivity of the optical image capturing system can be controlled, and its performance can be improved.

Central thicknesses of the fifth lens element and the sixth lens element on the optical axis are TP5 and TP6, respectively, and a distance between those two lens elements on the optical axis is IN56. The following condition is satisfied: 0.1≦(TP6+IN56)/TP5≦10. Hereby, the sensitivity of the optical image capturing system can be controlled and the total height of the optical image capturing system can be reduced.

The central thicknesses of the second, third and fourth lens elements on the optical axis are TP2, TP3 and TP4, respectively. The distance between the second lens element and the third lens element on the optical axis is IN23; the distance between the third lens element and the fourth lens element on the optical axis is IN34; the distance between the fourth lens element and the fifth lens element on the optical axis is IN45. The distance between the object-side surface of the first lens element and the image-side surface of the sixth lens element is denotyed by InTL. The following condition is satisfied: 0.1≦TP4/(IN34+TP4+IN45)<1. Hereby, the aberration generated when the incident light is travelling inside the optical system can be corrected slightly layer upon layer, and the total height of the optical image capturing system can be reduced.

In the optical image capturing system of the first embodiment, a distance perpendicular to the optical axis between a critical point C61 on an object-side surface of the sixth lens element and the optical axis is HVT61. A distance perpendicular to the optical axis between a critical point C62 on an image-side surface of the sixth lens element and the optical axis is HVT62. A distance in parallel with the optical axis from an axial point on the object-side surface of the sixth lens element to the critical point C61 is SGC61. A distance in parallel with the optical axis from an axial point on the image-side surface of the sixth lens element to the critical point C62 is SGC62. The following conditions may be satisfied: 0 mm≦HVT61≦3 mm, 0 mm<HVT62≦6 mm, 0≦HVT61/HVT62, 0 mm≦|SGC61|≦0.5 mm; 0 mm<|SGC62|≦2 mm, and 0<|SGC62|/(|SGC62|+TP6)≦0.9. Hereby, the off-axis aberration can be corrected effectively.

The following condition is satisfied for the optical image capturing system of the present disclosure: 0.2≦HVT62/HOI≦0.9. Preferably, the following condition may be satisfied: 0.3≦HVT62/HOI≦0.8. Hereby, the aberration of surrounding field of view for the optical image capturing system can be corrected.

The following condition is satisfied for the optical image capturing system of the present disclosure: 0≦HVT62/HOS≦0.5. Preferably, the following condition is satisfied: 0.2≦HVT62/HOS≦0.45. Hereby, the aberration of surrounding field of view for the optical image capturing system can be corrected.

In the optical image capturing system of the disclosure, the distance in parallel with an optical axis from an inflection point on the object-side surface of the sixth lens element that is nearest to the optical axis to an axial point on the object-side surface of the sixth lens element is denoted by SGI611. A distance in parallel with an optical axis from an inflection point on the image-side surface of the sixth lens element that is nearest to the optical axis to an axial point on the image-side surface of the sixth lens element is denoted by SGI621. The following conditions are satisfied: 0<SGI611/(SGI611+TP6)≦0.9 and 0<SGI621/(SGI621+TP6)≦0.9. Preferably, the following conditions may be satisfied: 0.1≦SGI611/(SGI611+TP6)≦0.6 and 0.1≦SGI621/(SGI621+TP6)≦0.6.

The distance in parallel with the optical axis from the inflection point on the object-side surface of the sixth lens element that is second nearest to the optical axis to an axial point on the object-side surface of the sixth lens element is denoted by SGI612. A distance in parallel with an optical axis from an inflection point on the image-side surface of the sixth lens element that is second nearest to the optical axis to an axial point on the image-side surface of the sixth lens element is denoted by SGI622. The following conditions are satisfied: 0<SGI612/(SGI612+TP6)≦0.9 and 0<SGI622/(SGI622+TP6)≦0.9. Preferably, the following conditions may be satisfied: 0.1≦SGI612/(SGI612+TP6)≦0.6 and 0.1≦SGI622/(SGI622+TP6)≦0.6.

The distance perpendicular to the optical axis between the inflection point on the object-side surface of the sixth lens element that is the nearest to the optical axis and the optical axis is denoted by HIF611. The distance perpendicular to the optical axis between an axial point on the image-side surface of the sixth lens element and an inflection point on the image-side surface of the sixth lens element that is the nearest to the optical axis is denoted by HIF621. The following conditions are satisfied: 0.001 mm≦|HIF611|≦5 mm and 0.001 mm≦|HIF621|≦5 mm. Preferably, the following conditions may be satisfied: 0.1 mm≦|HIF611|≦3.5 mm and 1.5 mm≦|HIF621|≦3.5 mm.

A distance perpendicular to the optical axis between the inflection point on the object-side surface of the sixth lens element that is second nearest to the optical axis and the optical axis is denoted by HIF612. A distance perpendicular to the optical axis between an axial point on the image-side surface of the sixth lens element and an inflection point on the image-side surface of the sixth lens element that is second nearest to the optical axis is denoted by HIF622. The following conditions are satisfied: 0.001 mm≦|HIF612|≦5 mm and 0.001 mm≦|HIF622|≦5 mm. Preferably, the following conditions may be satisfied: 0.1 mm≦|HIF622|≦3.5 mm and 0.1 mm≦|HIF612|≦3.5 mm.

The distance perpendicular to the optical axis between the inflection point on the object-side surface of the sixth lens element that is third nearest to the optical axis and the optical axis is denoted by HIF613. The distance perpendicular to the optical axis between an axial point on the image-side surface of the sixth lens element and an inflection point on the image-side surface of the sixth lens element that is third nearest to the optical axis is denoted by HIF623. The following conditions are satisfied: 0.001 mm≦|HIF613|≦5 mm and 0.001 mm≦|HIF623|≦5 mm. Preferably, the following conditions may be satisfied: 0.1 mm≦|HIF623|≦3.5 mm and 0.1 mm≦|HIF613|≦3.5 mm.

The distance perpendicular to the optical axis between the inflection point on the object-side surface of the sixth lens element that is fourth nearest to the optical axis and the optical axis is denoted by HIF614. The distance perpendicular to the optical axis between an axial point on the image-side surface of the sixth lens element and an inflection point on the image-side surface of the sixth lens element that is fourth nearest to the optical axis is denoted by HIF624. The following conditions are satisfied: 0.001 mm≦|HIF614|≦5 mm and 0.001 mm≦|HIF624|≦5 mm. Preferably, the following conditions may be satisfied: 0.1 mm≦|HIF624|≦3.5 mm and 0.1 mm≦|HIF614|≦3.5 mm.

In one embodiment of the optical image capturing system of the present disclosure, the chromatic aberration of the optical image capturing system can be corrected by alternatively arranging the lens elements with large Abbe number and small Abbe number.

The Aspheric equation for the lens element can be represented by:

z=ch ²/[1+[1−(k+1)c ² h ²]^(0.5) ]+A ₄ h ⁴ +A ₆ h ⁶ +A ₈ h ⁸ +A ₁₀ h ¹⁰ +A ₁₂ i ¹² +A ₁₄ h ¹⁴ +A ₁₆ h ¹⁶ +A ₁₈ h ¹⁸ +A ₂₀ h ²⁰+  (1),

where z is a position value of the position along the optical axis and at the height h which reference to the surface apex; k is the conic coefficient, c is the reciprocal of curvature radius, and A₄, A₆, A₈, A₁₀, A₁₂, A₁₄, A₁₆, A₁₈, and A₂₀ are high order aspheric coefficients.

In the optical image capturing system provided by the disclosure, the lens elements may be made of glass or plastic material. If plastic material is adopted to produce the lens elements, the production cost and the weight thereof can be reduced significantly. If lens elements are made of glass, the heat effect can be controlled, and there will be more options to allocation the refractive powers of the lens elements in the optical image capturing system. Besides, the object-side surface and the image-side surface of the first through sixth lens elements may be aspheric, which provides more control variables, such that the number of lens elements used can be reduced in contrast to traditional glass lens element, and the aberration can be reduced too. Thus, the total height of the optical image capturing system can be reduced effectively.

In addition, in the optical image capturing system provided by the disclosure, if the lens element has a convex surface, the surface of the lens element adjacent to the optical axis is convex in principle. If the lens element has a concave surface, the surface of the lens element adjacent to the optical axis is concave in principle.

The optical image capturing system of the disclosure can be adapted to the optical image capturing system with automatic focus if required. With the features of a good aberration correction and a high quality of image formation, the optical image capturing system can be used in various applications.

The optical image capturing system of the disclosure can include a driving module according to the actual requirements. The driving module may be coupled with the lens elements and enables the movement of the lens elements. The driving module described above may be the voice coil motor (VCM) which is applied to move the lens to focus, or may be the optical image stabilization (OIS) which is applied to reduce the frequency the optical system is out of focus owing to the vibration of the lens during photo or video shooting.

At least one lens element among the first, second, third, fourth, fifth and the sixth lens elements of the optical image capturing system of the present disclosure may be a filtering element of light with wavelength of less than 500 nm according to the actual requirements. The filtering element of light may be made by coating film on at least one surface of that lens element to impart it with certain filtering function, or forming the lens element with material that can filter light with short wavelength.

The image plane of the optical image capturing system of the present disclosure may be a plane or a curved surface, depending on the design requirement. When the image plane is a curved surface (e.g. a spherical surface with curvature radius), the incident angle required such that the rays are focused on the image plane can be reduced. As such, the length of the optical image capturing system (TTL) can be minimized, and the relative illumination may be improved as well.

One aspect of the present invention is to provide a plastic lens positioning element. The plastic lens positioning element may be formed integrally, and may be used for accommodating and positioning the lens elements of the present invention. The outer wall of the lens positioning element may further include at least two sprue marks. Those sprue marks may be symmetrically disposed around an axis (e.g. the optical axis), such that the thickness of the plastic lens positioning element is more uniform, and the structural strength thereof is improved. When the outer wall of the plastic lens positioning element is disposed with two sprue marks, the angles between the sprue marks may be 180 degrees. When the outer wall of the plastic lens positioning element is disposed with three sprue marks, the angles between the sprue marks may be 120 degrees. The aforementioned sprue marks may be disposed at the outer wall of the object-side end or the outer wall of the image-side end.

According to the above embodiments, the specific embodiments are presented in detail and accompanied by the drawings in the paragraphs hereinafter.

The First Embodiment (Embodiment 1)

Please refer to FIG. 1A and FIG. 1B. FIG. 1A is a schematic view of the optical image capturing system according to the first embodiment of the present application, FIG. 1B is longitudinal spherical aberration curves, astigmatic field curves, and an optical distortion curve of the optical image capturing system in the order from left to right according to the first embodiment of the present application, and FIG. 1C is a lateral aberration diagram of tangential fan, sagittal fan, the longest operation wavelength and the shortest operation wavelength passing through an edge of the entrance pupil and incident on the image plane by 0.7 HOI according to the first embodiment of the present application. As shown in FIG. 1A, in order from an object side to an image side, the optical image capturing system includes a first lens element 110, an aperture stop 100, a second lens element 120, a third lens element 130, a fourth lens element 140, a fifth lens element 150, a sixth lens element 160, an IR-bandstop filter 180, an image plane 190, and an image sensing device 192.

The first lens element 110 has negative refractive power and it is made of plastic material. The first lens element 110 has a concave object-side surface 112 and a concave image-side surface 114, both of the object-side surface 112 and the image-side surface 114 are aspheric, and the object-side surface 112 has two inflection points. The length of the maximum effective half diameter outline curve of the object-side surface of the first lens element is denoted as ARS11. The length of the maximum effective half diameter outline curve of the image-side surface of the first lens element is denoted as ARS12. The length of the ½ HEP outline curve of the object-side surface of the first lens element is denoted as ARE11, and the length of the ½ HEP outline curve of the image-side surface of the first lens element is denoted as ARE12. The central thickness of the first lens element on the optical axis is TP1.

A distance in parallel with an optical axis from an inflection point on the object-side surface of the first lens element that is nearest to the optical axis to an axial point on the object-side surface of the first lens element is denoted by SGI111. The distance in parallel with an optical axis from an inflection point on the image-side surface of the first lens element that is nearest to the optical axis to an axial point on the image-side surface of the first lens element is denoted by SGI121. The following conditions are satisfied: SGI111=−0.0031 mm and |SGI111|/(|SGI111|+TP1)=0.0016.

A distance in parallel with an optical axis from an inflection point on the object-side surface of the first lens element that is second nearest to the optical axis to an axial point on the object-side surface of the first lens element is denoted by SGI112. A distance in parallel with an optical axis from an inflection point on the image-side surface of the first lens element that is second nearest to the optical axis to an axial point on the image-side surface of the first lens element is denoted by SGI122. The following conditions are satisfied: SGI112=1.3178 mm and |SGI112|/(|SGI112|+TP1)=0.4052.

A distance perpendicular to the optical axis from the inflection point on the object-side surface of the first lens element that is nearest to the optical axis to an axial point on the object-side surface of the first lens element is denoted by HIF111. A distance perpendicular to the optical axis from the inflection point on the image-side surface of the first lens element that is nearest to the optical axis to an axial point on the image-side surface of the first lens element is denoted by HIF121. The following conditions are satisfied: HIF111=0.5557 mm and HIF111/HOI=0.1111.

A distance perpendicular to the optical axis from the inflection point on the object-side surface of the first lens element that is second nearest to the optical axis to an axial point on the object-side surface of the first lens element is denoted by HIF112. A distance perpendicular to the optical axis from the inflection point on the image-side surface of the first lens element that is second nearest to the optical axis to an axial point on the image-side surface of the first lens element is denoted by HIF122. The following conditions are satisfied: HIF112=5.3732 mm and HIF112/HOI=1.0746.

The second lens element 120 has positive refractive power and it is made of plastic material. The second lens element 120 has a convex object-side surface 122 and a convex image-side surface 124, and both of the object-side surface 122 and the image-side surface 124 are aspheric. The object-side surface 122 has one inflection point. The length of the maximum effective half diameter outline curve of the object-side surface of the second lens element is denoted as ARS21. The length of the maximum effective half diameter outline curve of the image-side surface of the second lens element is denoted as ARS22. The length of the ½ HEP outline curve of the object-side surface of the second lens element is denoted as ARE21, and the length of the ½ HEP outline curve of the image-side surface of the second lens element is denoted as ARE22. The central thickness of the second lens element on the optical axis is TP2.

The distance in parallel with an optical axis from an inflection point on the object-side surface of the second lens element that is nearest to the optical axis to the axial point on the object-side surface of the second lens element is denoted by SGI211. The distance in parallel with an optical axis from an inflection point on the image-side surface of the second lens element that is nearest to the optical axis to the axial point on the image-side surface of the second lens element is denoted by SGI221. The following conditions are satisfied: SGI211=0.1069 mm, |SGI211|/(|SGI211|+TP2)=0.0412, SGI221=0 mm and |SGI221|/(|SGI221|+TP2)=0.

The distance perpendicular to the optical axis from the inflection point on the object-side surface of the second lens element that is nearest to the optical axis to the axial point on the object-side surface of the second lens element is denoted by HIF211. The distance perpendicular to the optical axis from the inflection point on the image-side surface of the second lens element that is nearest to the optical axis to the axial point on the image-side surface of the second lens element is denoted by HIF221. The following conditions are satisfied: HIF211=1.1264 mm, HIF211/HOI=0.2253, HIF221=0 mm and HIF221/HOI=0.

The third lens element 130 has negative refractive power and it is made of plastic material. The third lens element 130 has a concave object-side surface 132 and a convex image-side surface 134, and both of the object-side surface 132 and the image-side surface 134 are aspheric. The object-side surface 132 and the image-side surface 134 both have an inflection point. The length of the maximum effective half diameter outline curve of the object-side surface of the third lens element is denoted as ARS31. The length of the maximum effective half diameter outline curve of the image-side surface of the third lens element is denoted as ARS32. The length of the ½ HEP outline curve of the object-side surface of the third lens element is denoted as ARE31, and the length of the ½ HEP outline curve of the image-side surface of the third lens element is denoted as ARE32. The central thickness of the third lens element on the optical axis is TP3.

The distance in parallel with an optical axis from an inflection point on the object-side surface of the third lens element that is nearest to the optical axis to an axial point on the object-side surface of the third lens element is denoted by SGI311. The distance in parallel with an optical axis from an inflection point on the image-side surface of the third lens element that is nearest to the optical axis to an axial point on the image-side surface of the third lens element is denoted by SGI321. The following conditions are satisfied: SGI311=−0.3041 mm, |SGI311|/(|SGI311|+TP3)=0.4445, SGI321=−0.1172 mm and |SGI321|/(|SGI321|+TP3)=0.2357.

The distance perpendicular to the optical axis between the inflection point on the object-side surface of the third lens element that is nearest to the optical axis and the axial point on the object-side surface of the third lens element is denoted by HIF311. The distance perpendicular to the optical axis between the inflection point on the image-side surface of the third lens element that is nearest to the optical axis and the axial point on the image-side surface of the third lens element is denoted by HIF321. The following conditions are satisfied: HIF311=1.5907 mm, HIF311/HOI=0.3181, HIF321=1.3380 mm and HIF321/HOI=0.2676.

The fourth lens element 140 has positive refractive power and it is made of plastic material. The fourth lens element 140 has a convex object-side surface 142 and a concave image-side surface 144; both of the object-side surface 142 and the image-side surface 144 are aspheric. The object-side surface 142 thereof has two inflection points, and the image-side surface 144 has one inflection point. The length of the maximum effective half diameter outline curve of the object-side surface of the fourth lens element is denoted as ARS41. The length of the maximum effective half diameter outline curve of the image-side surface of the fourth lens element is denoted as ARS42. The length of the ½ HEP outline curve of the object-side surface of the fourth lens element is denoted as ARE41, and the length of the ½ HEP outline curve of the image-side surface of the fourth lens element is denoted as ARE42. The central thickness of the fourth lens element on the optical axis is TP4.

The distance in parallel with an optical axis from an inflection point on the object-side surface of the fourth lens element that is nearest to the optical axis to the axial point on the object-side surface of the fourth lens element is denoted by SGI411. The distance in parallel with an optical axis from an inflection point on the image-side surface of the fourth lens element that is nearest to the optical axis to the axial point on the image-side surface of the fourth lens element is denoted by SGI421. The following conditions are satisfied: SGI411=0.0070 mm, |SGI411|/(|SGI411|+TP4)=0.0056, SGI421=0.0006 mm and |SGI421|/(|SGI421|+TP4)=0.0005.

The distance in parallel with an optical axis from an inflection point on the object-side surface of the fourth lens element that is second nearest to the optical axis to the axial point on the object-side surface of the fourth lens element is denoted by SGI412. The distance in parallel with an optical axis from an inflection point on the image-side surface of the fourth lens element that is second nearest to the optical axis to the axial point on the image-side surface of the fourth lens element is denoted by SGI422. The following conditions are satisfied: SGI412=−0.2078 mm and |SGI412|/(|SGI412|+TP4)=0.1439.

The perpendicular distance between the inflection point on the object-side surface of the fourth lens element that is nearest to the optical axis and the optical axis is denoted by HIF411. The perpendicular distance between the inflection point on the image-side surface of the fourth lens element that is nearest to the optical axis and the optical axis is denoted by HIF421. The following conditions are satisfied: HIF411=0.4706 mm, HIF411/HOI=0.0941, HIF421=0.1721 mm and HIF421/HOI=0.0344.

The distance perpendicular to the optical axis between the inflection point on the object-side surface of the fourth lens element that is second nearest to the optical axis and the optical axis is denoted by HIF412. The distance perpendicular to the optical axis between the inflection point on the image-side surface of the fourth lens element that is second nearest to the optical axis and the optical axis is denoted by HIF422. The following conditions are satisfied: HIF412=2.0421 mm and HIF412/HOI=0.4084.

The fifth lens element 150 has positive refractive power and it is made of plastic material. The fifth lens element 150 has a convex object-side surface 152 and a convex image-side surface 154, and both of the object-side surface 152 and the image-side surface 154 are aspheric. The object-side surface 152 has two inflection points and the image-side surface 154 has one inflection point. The length of the maximum effective half diameter outline curve of the object-side surface of the fifth lens element is denoted as ARS51. The length of the maximum effective half diameter outline curve of the image-side surface of the fifth lens element is denoted as ARS52. The length of the ½ HEP outline curve of the object-side surface of the fifth lens element is denoted as ARE51, and the length of the ½ HEP outline curve of the image-side surface of the fifth lens element is denoted as ARE52. The central thickness of the fifth lens element on the optical axis is TP5.

The distance in parallel with an optical axis from an inflection point on the object-side surface of the fifth lens element that is nearest to the optical axis to the axial point on the object-side surface of the fifth lens element is denoted by SGI511. The distance in parallel with an optical axis from an inflection point on the image-side surface of the fifth lens element that is nearest to the optical axis to the axial point on the image-side surface of the fifth lens element is denoted by SGI521. The following conditions are satisfied: SGI511=0.00364 mm, |SGI511|/(|SGI511|+TP5)=0.00338, SGI521=−0.63365 mm and |SGI521|/(|SGI521|+TP5)=0.37154.

The distance in parallel with an optical axis from an inflection point on the object-side surface of the fifth lens element that is second nearest to the optical axis to the axial point on the object-side surface of the fifth lens element is denoted by SGI512. The distance in parallel with an optical axis from an inflection point on the image-side surface of the fifth lens element that is second nearest to the optical axis to the axial point on the image-side surface of the fifth lens element is denoted by SGI522. The following conditions are satisfied: SGI512=−0.32032 mm and |SGI512|/(|SGI512|+TP5)=0.23009.

The distance in parallel with an optical axis from an inflection point on the object-side surface of the fifth lens element that is third nearest to the optical axis to the axial point on the object-side surface of the fifth lens element is denoted by SGI513. The distance in parallel with an optical axis from an inflection point on the image-side surface of the fifth lens element that is third nearest to the optical axis to the axial point on the image-side surface of the fifth lens element is denoted by SGI523. The following conditions are satisfied: SGI513=0 mm, |SGI513|/(|SGI513|+TP5)=0, SGI523=0 mm and |SGI523|/(|SGI523|+TP5)=0.

The distance in parallel with an optical axis from an inflection point on the object-side surface of the fifth lens element that is fourth nearest to the optical axis to the axial point on the object-side surface of the fifth lens element is denoted by SGI514. The distance in parallel with an optical axis from an inflection point on the image-side surface of the fifth lens element that is fourth nearest to the optical axis to the axial point on the image-side surface of the fifth lens element is denoted by SGI524. The following conditions are satisfied: SGI514=0 mm, |SGI514|/(|SGI514|+TP5)=0, SGI524=0 mm and |SGI524|/(|SGI524|+TP5)=0.

The perpendicular distance between the optical axis and the inflection point on the object-side surface of the fifth lens element that is nearest to the optical axis is denoted by HIF511. The perpendicular distance between the optical axis and the inflection point on the image-side surface of the fifth lens element that is nearest to the optical axis is denoted by HIF521. The following conditions are satisfied: HIF511=0.28212 mm, HIF511/HOI=0.05642, HIF521=2.13850 mm and HIF521/HOI=0.42770.

The distance perpendicular to the optical axis between the inflection point on the object-side surface of the fifth lens element that is second nearest to the optical axis and the optical axis is denoted by HIF512. The distance perpendicular to the optical axis between the inflection point on the image-side surface of the fifth lens element that is second nearest to the optical axis and the optical axis is denoted by HIF522. The following conditions are satisfied: HIF512=2.51384 mm and HIF512/HOI=0.50277.

The distance perpendicular to the optical axis between the inflection point on the object-side surface of the fifth lens element that is third nearest to the optical axis and the optical axis is denoted by HIF513. The distance perpendicular to the optical axis between the inflection point on the image-side surface of the fifth lens element that is third nearest to the optical axis and the optical axis is denoted by HIF523. The following conditions are satisfied: HIF513=0 mm, HIF513/HOI=0, HIF523=0 mm and HIF523/HOI=0.

The distance perpendicular to the optical axis between the inflection point on the object-side surface of the fifth lens element that is fourth nearest to the optical axis and the optical axis is denoted by HIF514. The distance perpendicular to the optical axis between the inflection point on the image-side surface of the fifth lens element that is fourth nearest to the optical axis and the optical axis is denoted by HIF524. The following conditions are satisfied: HIF514=0 mm, HIF514/HOI=0, HIF524=0 mm and HIF524/HOI=0.

The sixth lens element 160 has negative refractive power and it is made of plastic material. The sixth lens element 160 has a concave object-side surface 162 and a concave image-side surface 164, and the object-side surface 162 has two inflection points and the image-side surface 164 has one inflection point. Hereby, the incident angle of each field of view on the sixth lens element can be effectively adjusted and the spherical aberration can thus be mitigated. The length of the maximum effective half diameter outline curve of the object-side surface of the sixth lens element is denoted as ARS61. The length of the maximum effective half diameter outline curve of the image-side surface of the sixth lens element is denoted as ARS62. The length of the ½ HEP outline curve of the object-side surface of the sixth lens element is denoted as ARE61, and the length of the ½ HEP outline curve of the image-side surface of the sixth lens element is denoted as ARE62. The central thickness of the sixth lens element on the optical axis is TP6.

The distance in parallel with an optical axis from an inflection point on the object-side surface of the sixth lens element that is nearest to the optical axis to the axial point on the object-side surface of the sixth lens element is denoted by SGI611. The distance in parallel with an optical axis from an inflection point on the image-side surface of the sixth lens element that is nearest to the optical axis to the axial point on the image-side surface of the sixth lens element is denoted by SGI621. The following conditions are satisfied: SGI611=−0.38558 mm, |SGI611|≦/(|SGI611|≦+TP6)=0.27212, SGI621=0.12386 mm and |SGI621|/(|SGI6211+TP6)=0.10722.

The distance in parallel with an optical axis from an inflection point on the object-side surface of the sixth lens element that is second nearest to the optical axis to an axial point on the object-side surface of the sixth lens element is denoted by SGI612. The distance in parallel with an optical axis from an inflection point on the image-side surface of the sixth lens element that is second nearest to the optical axis to the axial point on the image-side surface of the sixth lens element is denoted by SGI622. The following conditions are satisfied: SGI612=−0.47400 mm, |SGI612|/(|SGI612|+TP6)=0.31488, SGI622=0 mm and |SGI622|/(|SGI622|+TP6)=0.

The distance perpendicular to the optical axis between the inflection point on the object-side surface of the sixth lens element that is nearest to the optical axis and the optical axis is denoted by HIF611. The distance perpendicular to the optical axis between the inflection point on the image-side surface of the sixth lens element that is nearest to the optical axis and the optical axis is denoted by HIF621. The following conditions are satisfied: HIF611=2.24283 mm, HIF611/HOI=0.44857, HIF621=1.07376 mm and HIF621/HOI=0.21475.

The distance perpendicular to the optical axis between the inflection point on the object-side surface of the sixth lens element that is second nearest to the optical axis and the optical axis is denoted by HIF612. The distance perpendicular to the optical axis between the inflection point on the image-side surface of the sixth lens element that is second nearest to the optical axis and the optical axis is denoted by HIF622. The following conditions are satisfied: HIF612=2.48895 mm and HIF612/HOI=0.49779.

The distance perpendicular to the optical axis between the inflection point on the object-side surface of the sixth lens element that is third nearest to the optical axis and the optical axis is denoted by HIF613. The distance perpendicular to the optical axis between the inflection point on the image-side surface of the sixth lens element that is third nearest to the optical axis and the optical axis is denoted by HIF623. The following conditions are satisfied: HIF613=0 mm, HIF613/HOI=0, HIF623=0 mm and HIF623/HOI=0.

The distance perpendicular to the optical axis between the inflection point on the object-side surface of the sixth lens element that is fourth nearest to the optical axis and the optical axis is denoted by HIF614. The distance perpendicular to the optical axis between the inflection point on the image-side surface of the sixth lens element that is fourth nearest to the optical axis and the optical axis is denoted by HIF624. The following conditions are satisfied: HIF614=0 mm, HIF614/HOI=0, HIF624=0 mm and HIF624/HOI=0.

The IR-bandstop filter 180 is made of glass material. The IR-bandstop filter 180 is disposed between the sixth lens element 160 and the image plane 190, and it does not affect the focal length of the optical image capturing system.

In the optical image capturing system of the first embodiment, the focal length of the optical image capturing system is f, the entrance pupil diameter of the optical image capturing system is HEP, and half of a maximum view angle of the optical image capturing system is HAF. The detailed parameters are shown as below: f=4.075 mm, f/HEP=1.4, HAF=50.001° and tan(HAF)=1.1918.

In the optical image capturing system of the first embodiment, the focal length of the first lens element 110 is f1 and the focal length of the sixth lens element 160 is f6. The following conditions are satisfied: f1=−7.828 mm, |f/f1|=0.52060, f6=−4.886 and |f1|>|f6|.

In the optical image capturing system of the first embodiment, focal lengths of the second lens element 120 to the fifth lens element 150 are f2, f3, f4 and f5, respectively. The following conditions are satisfied: |f2|+|f3|+|f4|+|f5|=95.50815 mm, |f1|+|f6|=12.71352 mm and |f2|+|f3|+|f4|+|f5|>|f1|+|f6|.

The ratio of the focal length f of the optical image capturing system to the focal length fp of each of lens elements with positive refractive power is PPR. The ratio of the focal length f of the optical image capturing system to a focal length fn of each of lens elements with negative refractive power is NPR. In the optical image capturing system of the first embodiment, a sum of the PPR of all lens elements with positive refractive power is ΣPPR=f/f2+f/f4+f/f5=1.63290. The sum of the NPR of all lens elements with negative refractive powers is ΣNPR=|f/f1|+|f/f3|+|f/f6|=1.51305, ΣPPR/|ΣNPR|=1.07921. The following conditions are also satisfied: |f/f2|=0.69101, |f/f3|=0.15834, |f/f4|=0.06883, |f/f5|=0.87305 and |f/f6|=0.83412.

In the optical image capturing system of the first embodiment, the distance from the object-side surface 112 of the first lens element to the image-side surface 164 of the sixth lens element is InTL. The distance from the object-side surface 112 of the first lens element to the image plane 190 is HOS. The distance from an aperture 100 to an image plane 190 is InS. Half of a diagonal length of an effective detection field of the image sensing device 192 is HOI. The distance from the image-side surface 164 of the sixth lens element to the image plane 190 is BFL. The following conditions are satisfied: InTL+BFL=HOS, HOS=19.54120 mm, HOI=5.0 mm, HOS/HOI=3.90824, HOS/f=4.7952, InS =11.685 mm and InS/HOS=0.59794.

In the optical image capturing system of the first embodiment, a total central thickness of all lens elements with refractive power on the optical axis is ΣTP. The following conditions are satisfied: ΣTP=8.13899 mm and ΣTP/InTL=0.52477. Hereby, the contrast ratio for the image formation in the optical image capturing system can be improved without sacrificing the defect-free rate during the manufacturing of the lens element, and a proper back focal length is provided to accommodate other optical components in the optical image capturing system.

In the optical image capturing system of the first embodiment, the curvature radius of the object-side surface 112 of the first lens element is R1. The curvature radius of the image-side surface 114 of the first lens element is R2. The following condition is satisfied: |R1/R2|=8.99987. Hereby, the first lens element may have a suitable magnitude of positive refractive power, so as to prevent the longitudinal spherical aberration from increasing too fast.

In the optical image capturing system of the first embodiment, the curvature radius of the object-side surface 162 of the sixth lens element is R11. The curvature radius of the image-side surface 164 of the sixth lens element is R12. The following condition is satisfied: (R11−R12)/(R11+R12)=1.27780. Hereby, the astigmatism generated by the optical image capturing system can be corrected.

In the optical image capturing system of the first embodiment, a sum of focal lengths of all lens elements with positive refractive power is ΣPP. The following conditions are satisfied: ΣPP=f2+f4+f5=69.770 mm and f5/(f2+f4+f5)=0.067. With this configuration, the positive refractive power of a single lens element can be distributed to other lens elements with positive refractive powers in an appropriate way, so as to suppress the generation of noticeable aberrations when the incident light is propagating in the optical system.

In the optical image capturing system of the first embodiment, a sum of focal lengths of all lens elements with negative refractive power is ΣNP. The following conditions are satisfied: ΣNP=f1+f3+f6=−38.451 mm and f6/(f1+f3+f6)=0.127. With this configuration, the negative refractive power of the sixth lens element 160 may be distributed to other lens elements with negative refractive power in an appropriate way, so as to suppress the generation of noticeable aberrations when the incident light is propagating in the optical system.

In the optical image capturing system of the first embodiment, the distance between the first lens element 110 and the second lens element 120 on the optical axis is IN12. The following conditions are satisfied: IN12=6.418 mm and IN12/f=1.57491. Hereby, the chromatic aberration of the lens elements can be reduced, such that the performance can be improved.

In the optical image capturing system of the first embodiment, a distance between the fifth lens element 150 and the sixth lens element 160 on the optical axis is IN56. The following conditions are satisfied: IN56=0.025 mm and IN56/f=0.00613. Hereby, the chromatic aberration of the lens elements can be reduced, such that the performance can be improved.

In the optical image capturing system of the first embodiment, central thicknesses of the first lens element 110 and the second lens element 120 on the optical axis are TP1 and TP2, respectively. The following conditions are satisfied: TP1=1.934 mm, TP2=2.486 mm and (TP1+IN12)/TP2=3.36005. Hereby, the sensitivity of the optical image capturing system can be controlled, and the performance can be improved.

In the optical image capturing system of the first embodiment, central thicknesses of the fifth lens element 150 and the sixth lens element 160 on the optical axis are TP5 and TP6, respectively, and the distance between the aforementioned two lens elements on the optical axis is IN56. The following conditions are satisfied: TP5=1.072 mm, TP6=1.031 mm and (TP6+IN56)/TP5=0.98555. Hereby, the sensitivity of the optical image capturing system can be controlled and the total height of the optical image capturing system can be reduced.

In the optical image capturing system of the first embodiment, a distance between the third lens element 130 and the fourth lens element 140 on the optical axis is IN34. A distance between the fourth lens element 140 and the fifth lens element 150 on the optical axis is IN45. The following conditions are satisfied: IN34=0.401 mm, IN45=0.025 mm and TP4/(IN34+TP4+IN45)=0.74376. Hereby, the aberration generated when the incident light is propagating inside the optical system can be corrected slightly layer upon layer, and the total height of the optical image capturing system can be reduced.

In the optical image capturing system of the first embodiment, the distance paralleling the optical axis from a maximum effective half diameter position on the object-side surface 152 of the fifth lens element to the axial point on the object-side surface 152 of the fifth lens element is InRS51. The distance paralleling the optical axis from a maximum effective half diameter position on the image-side surface 154 of the fifth lens element to the axial point on the image-side surface 154 of the fifth lens element is InRS52. The central thickness of the fifth lens element 150 is TP5. The following conditions are satisfied: InRS51=−0.34789 mm, InRS52=−0.88185 mm, InRS511/TP5=0.32458 and |InRS52|/TP5 =0.82276. This configuration is favorable to the manufacturing and forming of lens elements, as well as the minimization of the optical image capturing system.

In the optical image capturing system of the first embodiment, the distance perpendicular to the optical axis between a critical point C51 on the object-side surface 152 of the fifth lens element and the optical axis is HVT51. The distance perpendicular to the optical axis between a critical point C52 on the image-side surface 154 of the fifth lens element and the optical axis is HVT52. The following conditions are satisfied: HVT51=0.515349 mm and HVT52=0 mm.

In the optical image capturing system of the first embodiment, the distance paralleling the optical axis from a maximum effective half diameter position on the object-side surface 162 of the sixth lens element to the axial point on the object-side surface 162 of the sixth lens element is InRS61. The distance paralleling the optical axis from a maximum effective half diameter position on the image-side surface 164 of the sixth lens element to the axial point on the image-side surface 164 of the sixth lens element is InRS62. The central thickness of the sixth lens element 160 on the optical axis is TP6. The following conditions are satisfied: InRS61=−0.58390 mm, InRS62=0.41976 mm, |InRS61|/TP6=0.56616 and |InRS62|/TP6=0.40700. This configuration is favorable to the manufacturing and forming of lens elements, as well as the minimization of the optical image capturing system.

In the optical image capturing system of the first embodiment, the distance perpendicular to the optical axis between a critical point C61 on the object-side surface 162 of the sixth lens element and the optical axis is HVT61. The distance perpendicular to the optical axis between a critical point C62 on the image-side surface 164 of the sixth lens element and the optical axis is HVT62. The following conditions are satisfied: HVT61=0 mm and HVT62=0 mm.

In the optical image capturing system of the first embodiment, the following condition is satisfied: HVT51/HOI=0.1031. Hereby, the aberration of surrounding field of view can be corrected.

In the optical image capturing system of the first embodiment, the following condition is satisfied: HVT51/HOS=0.02634. Hereby, the aberration of surrounding field of view can be corrected.

In the optical image capturing system of the first embodiment, the second lens element 120, the third lens element 130 and the sixth lens element 160 have negative refractive powers. The Abbe number of the second lens element is NA2. The Abbe number of the third lens element is NA3. The Abbe number of the sixth lens element is NA6. The following condition is satisfied: NA6/NA2≦1. Hereby, the chromatic aberration of the optical image capturing system can be corrected.

In the optical image capturing system of the first embodiment, TV distortion and optical distortion for image formation in the optical image capturing system are TDT and ODT, respectively. The following conditions are satisfied: |TDT|=2.124% and |ODT|=5.076%.

In the optical image capturing system of the first embodiment, the transverse aberration of the longest operation wavelength of visible light of a positive direction tangential fan passing through the edge of the aperture and incident at the position of 0.7 field of view on the image plane is denoted as PLTA, and it equals to 0.006 mm. The transverse aberration of the shortest operation wavelength of visible light of a positive direction tangential fan passing through the edge of the aperture and incident at the position of 0.7 field of view on the image plane is denoted as PSTA, and it equals to 0.005 mm. The transverse aberration of the longest operation wavelength of visible light of the negative direction tangential fan passing through the edge of the aperture and incident at the position of 0.7 field of view on the image plane is denoted as NLTA, and it equals to 0.004 mm. The transverse aberration of the shortest operation wavelength of visible light of the negative direction tangential fan passing through the edge of the aperture and incident at the position of 0.7 field of view on the image plane is denoted as NSTA, and it equals to −0.007 mm. The transverse aberration of the longest operation wavelength of visible light of the sagittal fan passing through the edge of the aperture and incident at the position of 0.7 field of view on the image plane is denoted as SLTA, and it equals to −0.003 mm. The transverse aberration of the shortest operation wavelength of visible light of the sagittal fan passing through the edge of the aperture and incident at the position of 0.7 field of view on the image plane is denoted as SSTA, and it equals to 0.008 mm.

As shown in FIGS. 7A, 7B and 7C, the lens positioning element 794 of the present invention may be hollow, in order to accommodate any lens element and align the lens elements along the optical axis. The lens positioning element is disposed with an object-side end 796 and an image-side end 798. The object-side end 796 is adjacent to the object side and is disposed with a first opening 7962, whereas the image-side end 798 is adjacent to the image side and is disposed with a second opening 7982. The outer wall of the lens positioning element 794 includes two tangent planes 799; each of the tangent planes 799 has a sprue mark 7992. The inner diameter of the aforementioned first opening 7962 is denoted by OD and the inner diameter of the second opening 7982 is denoted by ID, the following conditions are satisfied: OD=5.8 mm, ID=3.863 mm, and OD/ID=1.5014. The minimum thickness of the object-side end 796 is denoted by OT, whereas the minimum thickness of the image-side end 798 is denoted by IT, the following conditions are satisfied: OT=0.1 mm, IT=0.3 mm, and OT/IT=0.33.

The contents in Tables 1 and 2 below should be incorporated into the reference of the present embodiment.

TABLE 1 Lens Parameters for the First Embodiment f(focal length) = 5.709 mm; f/HEP = 1.9; HAF(half angle of view) = 52.5 deg Central Surface Thickness Refractive Abbe Focal No. Curvature Radius (mm) Material Index Number Length 0 Object Plane Plane 1 Lens 1 −40.99625704 1.934 Plastic 1.515 56.55 −7.828 2 4.555209289 5.923 3 Aperture Plane 0.495 Stop 4 Lens 2 5.333427366 2.486 Plastic 1.544 55.96 5.897 5 −6.781659971 0.502 6 Lens 3 −5.697794287 0.380 Plastic 1.642 22.46 −25.738 7 −8.883957518 0.401 8 Lens 4 13.19225664 1.236 Plastic 1.544 55.96 59.205 9 21.55681832 0.025 10 Lens 5 8.987806345 1.072 Plastic 1.515 56.55 4.668 11 −3.158875374 0.025 12 Lens 6 −29.46491425 1.031 Plastic 1.642 22.46 −4.886 13 3.593484273 2.412 14 IR-bandstop Plane 0.200 1.517 64.13 Filter 15 Plane 1.420 16 Image Plane Plane Reference wavelength (d-line) = 555 nm; Shield Position: The 1^(st) surface with a clear aperture of 5.800 mm, the 3^(rd) surface with a clear aperture of 1.570 mm and the 5^(th) surface with a clear aperture of 1.950 mm

TABLE 2 Aspheric Coefficients in the First Embodiment Table 2: Aspheric Coefficients Surface No. 1 2 4 5 6 7 8 k 4.310876E+01 −4.707622E+00  2.616025E+00  2.445397E+00  5.645686E+00 −2.117147E+01 −5.287220E+00 A₄ 7.054243E−03  1.714312E−02 −8.377541E−03 −1.789549E−02 −3.379055E−03 −1.370959E−02 −2.937377E−02 A₆ −5.233264E−04  −1.502232E−04 −1.838068E−03 −3.657520E−03 −1.225453E−03  6.250200E−03  2.743532E−03 A₈ 3.077890E−05 −1.359611E−04  1.233332E−03 −1.131622E−03 −5.979572E−03 −5.854426E−03 −2.457574E−03 A₁₀ −1.260650E−06   2.680747E−05 −2.390895E−03  1.390351E−03  4.556449E−03  4.049451E−03  1.874319E−03 A₁₂ 3.319093E−08 −2.017491E−06  1.998555E−03 −4.152857E−04 −1.177175E−03 −1.314592E−03 −6.013661E−04 A₁₄ −5.051600E−10   6.604615E−08 −9.734019E−04  5.487286E−05  1.370522E−04  2.143097E−04  8.792480E−05 A₁₆ 3.380000E−12 −1.301630E−09  2.478373E−04 −2.919339E−06 −5.974015E−06 −1.399894E−05 −4.770527E−06 Table 2 (cont.): Aspheric Coefficients Surface No. 9 10 11 12 13 k  6.200000E+01 −2.114008E+01 −7.699904E+00 −6.155476E+01 −3.120467E−01 A₄ −1.359965E−01 −1.263831E−01 −1.927804E−02 −2.492467E−02 −3.521844E−02 A₆  6.628518E−02  6.965399E−02  2.478376E−03 −1.835360E−03  5.629654E−03 A₈ −2.129167E−02 −2.116027E−02  1.438785E−03  3.201343E−03 −5.466925E−04 A₁₀  4.396344E−03  3.819371E−03 −7.013749E−04 −8.990757E−04  2.231154E−05 A₁₂ −5.542899E−04 −4.040283E−04  1.253214E−04  1.245343E−04  5.548990E−07 A₁₄  3.768879E−05  2.280473E−05 −9.943196E−06 −8.788363E−06 −9.396920E−08 A₁₆ −1.052467E−06 −5.165452E−07  2.898397E−07  2.494302E−07  2.728360E−09

The values pertaining to the length of the outline curves can be obtained from the data in Table 1 and Table 2:

First Embodiment (Primary Reference Wavelength = 555 nm) ARE ½(HEP) ARE value ARE − ½(HEP) 2(ARE/HEP) % TP ARE/TP (%) 11 1.455 1.455 −0.00033 99.98% 1.934 75.23% 12 1.455 1.495 0.03957 102.72% 1.934 77.29% 21 1.455 1.465 0.00940 100.65% 2.486 58.93% 22 1.455 1.495 0.03950 102.71% 2.486 60.14% 31 1.455 1.486 0.03045 102.09% 0.380 391.02% 32 1.455 1.464 0.00830 100.57% 0.380 385.19% 41 1.455 1.458 0.00237 100.16% 1.236 117.95% 42 1.455 1.484 0.02825 101.94% 1.236 120.04% 51 1.455 1.462 0.00672 100.46% 1.072 136.42% 52 1.455 1.499 0.04335 102.98% 1.072 139.83% 61 1.455 1.465 0.00964 100.66% 1.031 142.06% 62 1.455 1.469 0.01374 100.94% 1.031 142.45% ARS EHD ARS value ARS − EHD (ARS/EHD) % TP ARS/TP (%) 11 5.800 6.141 0.341 105.88% 1.934 317.51% 12 3.299 4.423 1.125 134.10% 1.934 228.70% 21 1.664 1.674 0.010 100.61% 2.486 67.35% 22 1.950 2.119 0.169 108.65% 2.486 85.23% 31 1.980 2.048 0.069 103.47% 0.380 539.05% 32 2.084 2.101 0.017 100.83% 0.380 552.87% 41 2.247 2.287 0.040 101.80% 1.236 185.05% 42 2.530 2.813 0.284 111.22% 1.236 227.63% 51 2.655 2.690 0.035 101.32% 1.072 250.99% 52 2.764 2.930 0.166 106.00% 1.072 273.40% 61 2.816 2.905 0.089 103.16% 1.031 281.64% 62 3.363 3.391 0.029 100.86% 1.031 328.83%

Table 1 is the detailed structural data for the first embodiment in FIG. 1A, wherein the unit for the curvature radius, the central thickness, the distance, and the focal length is millimeters (mm) Surfaces 0-16 illustrate the surfaces from the object side to the image plane in the optical image capturing system. Table 2 shows the aspheric coefficients of the first embodiment, wherein k is the conic coefficient in the aspheric surface equation, and A₁-A₂₀ are respectively the first to the twentieth order aspheric coefficients. In addition, the tables in the following embodiments correspond to the schematic view and the aberration graphs of their respective embodiments, and the definitions of parameters in these tables are similar to those in the Tables 1 and 2, so the repetitive details will not be given here.

Second Embodiment

Please refer to FIG. 2A, FIG. 2B and FIG. 2C. FIG. 2A is a schematic view of the optical image capturing system according to the second embodiment of the present invention. FIG. 2B shows the longitudinal spherical aberration curves, astigmatic field curves, and optical distortion curve of the optical image capturing system of the second embodiment, in the order from left to right. FIG. 2C is a transverse aberration diagram at the position of 0.7 HOI on the image plane of the optical image capturing system of the second embodiment. As shown in FIG. 2A, in the order from an object side to an image side, the optical image capturing system includes a first lens element 210, a second lens element 220, a third lens element 230, an aperture stop 200, a fourth lens element 240, a fifth lens element 250, a sixth lens element 260, an IR-bandstop filter 280, an image plane 290, and an image sensing device 292.

The first lens element 210 has positive refractive power and is made of plastic material. The first lens element 210 has a concave object-side surface 212 and a convex image-side surface 214, and both object-side surface 212 and image-side surface 214 are aspheric.

The second lens element 220 has negative refractive power and is made of plastic material. The second lens element 220 has a concave object-side surface 222 and a concave image-side surface 224, and both object-side surface 222 and image-side surface 224 are aspheric. The object-side surface 222 has one inflection point.

The third lens element 230 has negative refractive power and is made of plastic material. The third lens element 230 has a convex object-side surface 232 and a concave image-side surface 234, and both object-side surface 232 and image-side surface 234 are aspheric. The object-side surface 232 has one inflection point.

The fourth lens element 240 has positive refractive power and is made of plastic material. The fourth lens element 240 has a convex object-side surface 242 and a convex image-side surface 244, and both object-side surface 242 and image-side surface 244 are aspheric. The object-side surface 242 thereof has one inflection point.

The fifth lens element 250 has positive refractive power and is made of plastic material. The fifth lens element 250 has a convex object-side surface 252 and a convex image-side surface 254, and both object-side surface 252 and image-side surface 254 are aspheric. Both of the object-side surface 252 and the image-side surface 254 have one inflection point.

The sixth lens element 260 has negative refractive power and is made of plastic material. The sixth lens element 260 has a concave object-side surface 262 and a concave image-side surface 264. As a result, the back focal length thereof can be reduced, such that the size of the optical image capturing system can be kept small. In addition, the image-side surface 264 of the sixth lens element 260 has one inflection point, which can reduce the incident angle of the off-axis rays. Therefore, the off-axis aberration can be mitigated.

The IR-bandstop filter 280 is made of glass material and is disposed between the sixth lens element 260 and the image plane 290. The IR-bandstop filter 280 does not affect the focal length of the optical image capturing system.

The contents in Tables 3 and 4 below should be incorporated into the reference of the present embodiment.

TABLE 3 Lens Parameters for the Second Embodiment f(focal length) = 2.701 mm; f/HEP = 1.0; HAF(half angle of view) = 42.501 deg Central Surface Thickness Refractive Abbe Focal No. Curvature Radius (mm) Material Index Number Length 0 Object 1E+18 1E+18 1 Lens 1 −202.3770793 2.297 Plastic 1.661 20.40 97.665642 2 −49.49282256 2.767 3 Lens 2 −32.31026372 2.347 Plastic 1.565 58.00 −7.929842 4 5.357861455 4.598 5 Lens 3 49.90646908 22.266 Plastic 1.661 20.40 −498.147795 6 35.6436857 0.536 7 Aperture 1E+18 −0.472 Stop 8 Lens 4 7.906829547 2.797 Plastic 1.565 58.00 10.760618 9 −23.25960987 4.099 10 Lens 5 5.393567096 3.869 Plastic 1.565 58.00 6.24233 11 −7.615665631 0.050 12 Lens 6 −33.66483347 3.092 Plastic 1.661 20.40 −9.050711 13 7.623433955 0.450 14 IR-bandstop 1E+18 0.850 BK_7 NBK7 Filter 15 1E+18 0.368 16 Image 1E+18 0.000 Plane Reference wavelength = 555 nm; Shield position: none

TABLE 4 The Aspheric Coefficients of the Second Embodiment Table 4: Aspheric Coefficients Surface No. 1 2 3 4 5 6 8 k −1.951016E+01 −8.619604E+00 −4.772274E+01  −4.379204E−01 −3.914847E+01 −4.366101E+01  −1.504581E+00 A₄  1.940711E−06  1.763995E−06 2.882186E−05 −3.661126E−04 −1.305356E−04 5.406608E−04 −5.183979E−05 A₆ −7.301925E−09  7.522714E−09 5.802768E−08 −6.765057E−06 −1.538468E−09 1.694893E−05 −4.194824E−06 A₈ −8.781851E−12 −1.676527E−11 6.924292E−10  1.804782E−07  1.462736E−08 −8.413505E−07  −3.312006E−07 A₁₀ −5.088882E−14 −6.502336E−14 −3.088678E−13  −3.778262E−09 −8.355873E−10 6.575658E−08 −7.163798E−10 A₁₂  0.000000E+00  0.000000E+00 0.000000E+00  0.000000E+00  0.000000E+00 0.000000E+00  0.000000E+00 Table 4 (cont.): Aspheric Coefficients Surface No. 9 10 11 12 13 k  1.883632E+01 −4.824914E−01 −1.969608E+00 2.253498E+01 −1.272832E+00 A₄ −7.316380E−04 −5.149543E−04 −1.590071E−05 −2.671636E−03  −8.415967E−04 A₆  6.626297E−06  7.809073E−06  6.386542E−05 6.062965E−05 −5.015786E−04 A₈ −4.356537E−07 −8.768441E−07 −3.685586E−06 5.838420E−06  8.153122E−05 A₁₀ −2.110816E−09 −1.038289E−08  8.053618E−08 −2.572257E−07  −5.374200E−06 A₁₂  0.000000E+00  0.000000E+00  0.000000E+00 0.000000E+00  0.000000E+00

In the second embodiment, the presentation of the aspheric surface equation is similar to that in the first embodiment. Besides, the definitions of parameters in following tables are similar to those in the first embodiment, so the repetitive details will not be given here.

The following values for the conditional expressions can be obtained from the data in Table 3 and Table 4.

Second Embodiment (Primary reference wavelength = 555 nm) |f/f1| |f/f2| |f/f3| |f/f4| |f/f5| |f/f6| 0.02766 0.34065 0.00542 0.25103 0.43273 0.29846 TP4/(IN34 + ΣPPR ΣNPR ΣPPR/|ΣNPR| IN12/f IN56/f TP4 + IN45) 0.71685 0.63911 1.12164 1.02428 0.01851 0.40188 |f1/f2| |f2/f3| (TP1 + IN12)/TP2 (TP6 + IN56)/TP5 12.31621 0.01592 2.15806 0.81229 HOS InTL HOS/HOI InS/HOS ODT % TDT % 49.91370 48.24610 19.96548 0.30257 1.06526 0.94771 HVT51 HVT52 HVT61 HVT62 HVT62/HOI HVT62/HOS 0 0 0.00000 0.00000 0.00000 0.00000 HVT21 HVT22 HVT31 HVT32 HVT41 HVT42 8.993 0.000 5.253 0.000 0.000 0.000 |InRS61|/ |InRS62|/ TP2/TP3 TP3/TP4 InRS61 InRS62 TP6 TP6 0.10539 7.96016 −0.47746 0.36603 0.15439 0.11836 PLTA PSTA NLTA NSTA SLTA SSTA −0.026 mm 0.022 mm −0.005 mm 0.010 mm −0.00045 0.00031 mm mm OD ID OD/ID OT IT OT/IT 18.4 mm 3.324 mm 5.5355 0.9 mm 0.1 mm 9

The values pertaining to the length of the outline curves are obtainable from the data in Table 3 and Table 4:

Second Embodiment (Primary Reference Wavelength = 555 nm) ARE ½(HEP) ARE value ARE − ½(HEP) 2(ARE/HEP) % TP ARE/TP (%) 11 1.351 1.350 −0.00062 99.95% 2.297 58.76% 12 1.351 1.350 −0.00047 99.97% 2.297 58.77% 21 1.351 1.350 −0.00026 99.98% 2.347 57.54% 22 1.351 1.364 0.01357 101.01% 2.347 58.13% 31 1.351 1.350 −0.00048 99.96% 22.266 6.06% 32 1.351 1.350 −0.00026 99.98% 22.266 6.06% 41 1.351 1.356 0.00581 100.43% 2.797 48.49% 42 1.351 1.351 0.00027 100.02% 2.797 48.30% 51 1.351 1.364 0.01328 100.98% 3.869 35.26% 52 1.351 1.357 0.00623 100.46% 3.869 35.07% 61 1.351 1.351 0.00007 100.01% 3.092 43.68% 62 1.351 1.356 0.00565 100.42% 3.092 43.86% ARS EHD ARS value ARS − EHD (ARS/EHD) % TP ARS/TP (%) 11 18.318 18.392 0.07471 100.41% 2.297 800.54% 12 18.121 18.382 0.26047 101.44% 2.297 800.08% 21 11.980 12.039 0.05826 100.49% 2.347 513.00% 22 6.569 8.414 1.84497 128.09% 2.347 358.55% 31 6.553 6.560 0.00652 100.10% 22.266 29.46% 32 3.846 3.875 0.02974 100.77% 22.266 17.41% 41 4.363 4.522 0.15906 103.65% 2.797 161.66% 42 4.553 4.723 0.16973 103.73% 2.797 168.84% 51 4.361 4.747 0.38567 108.84% 3.869 122.71% 52 4.059 4.181 0.12250 103.02% 3.869 108.08% 61 3.685 3.733 0.04809 101.30% 3.092 120.72% 62 2.824 2.851 0.02765 100.98% 3.092 92.20%

The values as follows can be obtained from the data in Tables 3 and 4 above

Values Related to Inflection Point of Second Embodiment (Primary Reference Wavelength = 555 nm) HIF211 4.9639 HIF211/HOI 1.9856 SGI211 −0.2926 | SGI211|/(| SGI211| + TP2) 0.1109 HIF311 3.2089 HIF311/HOI 1.2836 SGI311 0.0856 | SGI311|/(| SGI311| + TP3) 0.0038 HIF411 3.8936 HIF411/HOI 1.5575 SGI411 0.8864 | SGI411|/(| SGI411| + TP4) 0.2406 HIF511 4.0159 HIF511/HOI 1.6064 SGI511 1.4493 | SGI511|/(| SGI511| + TP5) 0.2725 HIF521 3.8370 HIF521/HOI 1.5348 SGI521 −0.8306 |SGI521 |/(|SGI521 | + TP5) 0.1767 HIF621 2.0925 HIF621/HOI 0.8370 SGI621 0.2488 |SGI621 |/(|SGI621 | + TP6) 0.0745

Third Embodiment

Please refer to FIG. 3A, FIG. 3B and FIG. 3C. FIG. 3A is a schematic view of the optical image capturing system according to the third embodiment of the present invention. FIG. 3B shows the longitudinal spherical aberration curves, astigmatic field curves, and optical distortion curve of the optical image capturing system of the third embodiment, in the order from left to right. FIG. 3C is a transverse aberration diagram at the position of 0.7 HOI on the image plane of the optical image capturing system of the third embodiment. As shown in FIG. 3A, in the order from an object side to an image side, the optical image capturing system includes a first lens element 310, a second lens element 320, a third lens element 330, an aperture stop 300, a fourth lens element 340, a fifth lens element 350, a sixth lens element 360, an IR-bandstop filter 380, an image plane 390, and an image sensing device 392.

The first lens element 310 has positive refractive power and is made of plastic material. The first lens element 310 has a convex object-side surface 312 and a concave image-side surface 314, and both object-side surface 312 and image-side surface 314 are aspheric. The object-side surface 312 and image-side surface 314 both have one inflection point.

The second lens element 320 has negative refractive power and is made of plastic material. The second lens element 320 has a convex object-side surface 322 and a concave image-side surface 324, and both object-side surface 322 and image-side surface 324 are aspheric. The object-side surface 322 has one inflection point.

The third lens element 330 has negative refractive power and is made of plastic material. The third lens element 330 has a convex object-side surface 332 and a concave image-side surface 334, and both object-side surface 332 and image-side surface 334 are aspheric.

The fourth lens element 340 has positive refractive power and is made of plastic material. The fourth lens element 340 has a convex object-side surface 342 and a convex image-side surface 344, and both object-side surface 342 and image-side surface 344 are aspheric.

The fifth lens element 350 has negative refractive power and is made of plastic material. The fifth lens element 350 has a concave object-side surface 352 and a convex image-side surface 354, and both object-side surface 352 and image-side surface 354 are aspheric. The object-side surface 352 and the image-side surface 354 both have two inflection points.

The sixth lens element 360 has positive refractive power and is made of plastic material. The sixth lens element 360 has a convex object-side surface 362 and a concave image-side surface 364. As a result, the back focal length thereof can be reduced, such that the size of the optical image capturing system can be kept small. In addition, the incident angle of the off-axis rays can be reduced. Therefore, the off-axis aberration can be mitigated.

The IR-bandstop filter 380 is made of glass material and is disposed between the sixth lens element 360 and the image plane 390. The IR-bandstop filter 380 does not affect the focal length of the optical image capturing system.

The contents in Tables 5 and 6 below should be incorporated into the reference of the present embodiment.

TABLE 5 Lens Parameters for the Third Embodiment f(focal length) = 3.285 mm; f/HEP = 1.0; HAF(half angle of view) = 37.501 deg Central Surface Thickness Refractive Abbe Focal No. Curvature Radius (mm) Material Index Number Length 0 Object 1E+18 1E+18 1 Lens 1 16.2248133 6.493 Plastic 1.661 20.40 4420.53 2 13.70277531 1.851 3 Lens 2 122.1376327 2.086 Plastic 1.565 58.00 −8.19 4 4.445520549 4.426 5 Lens 3 29.65036634 17.472 Plastic 1.661 20.40 −86.32 6 14.95620523 0.817 7 Aperture 1E+18 −0.767 Stop 8 Lens 4 8.851165069 5.792 Plastic 1.565 58.00 5.59 9 −3.766109143 1.295 10 Lens 5 −3.919508955 2.291 Plastic 1.607 26.60 −16.23 11 −7.918367707 0.074 12 Lens 6 6.167029625 6.095 Plastic 1.565 58.00 12.59 13 29.17989341 1.000 14 IR-bandstop 1E+18 0.850 BK_7 Filter 15 1E+18 0.224 16 Image 1E+18 0.001 Plane Reference wavelength = 555 nm; Shield position: none

TABLE 6 The Aspheric Coefficients of the Third Embodiment Table 6: Aspheric Coefficients Surface No. 1 2 3 4 5 6 8 k −4.644874E−01 −7.656826E−01  1.994609E+01 −5.544916E−01 5.221559E+00 1.062948E+01  1.058456E+00 A₄ −1.186730E−05 −6.934116E−05  7.206447E−05  1.737770E−05 −3.588857E−05  6.317027E−04  1.359967E−04 A₆  1.437344E−07 −3.000997E−06 −1.080543E−07  2.748411E−05 7.427686E−06 −2.181388E−05  −3.018249E−05 A₈ −1.978024E−09  6.283186E−08 −8.330034E−09 −1.237192E−07 −1.597349E−07  −4.657776E−07  −2.936910E−07 A₁₀  1.104820E−14 −4.506016E−10 −5.065421E−11 −2.318518E−08 4.298305E−09 7.380038E−09 −1.570598E−09 A₁₂  0.000000E+00  0.000000E+00  0.000000E+00  0.000000E+00 0.000000E+00 0.000000E+00  0.000000E+00 Table 6 (cont.): Aspheric Coefficients Surface No. 9 10 11 12 13 K −3.700856E+00 −6.953806E+00 −2.047117E+01  −2.379250E−01 −5.000000E+01  A₄ −5.002806E−04  2.191706E−03 8.916651E−04  1.757080E−03 4.822263E−03 A₆  5.087876E−06 −7.062901E−05 4.953918E−05 −1.619706E−05 1.203976E−03 A₈ −8.041839E−07  4.953869E−07 −6.679286E−06  −4.947824E−07 −1.002323E−04  A₁₀ −7.866626E−09 −2.891528E−08 1.406346E−07  1.536953E−08 1.495913E−05 A₁₂  0.000000E+00  0.000000E+00 0.000000E+00  0.000000E+00 0.000000E+00

In the third embodiment, the presentation of the aspheric surface equation is similar to that in the first embodiment. Besides, the definitions of parameters in following tables are similar to those in the first embodiment, so the repetitive details will not be given here.

The following values for the conditional expressions can be obtained from the data in Table 5 and Table 6.

Third Embodiment (Primary Reference Wavelength = 555 nm) |f/f1| |f/f2| |f/f3| |f/f4| |f/f5| |f/f6| 0.00074 0.40105 0.03806 0.58779 0.20249 0.26095 TP4/(IN34 + ΣPPR ΣNPR ΣPPR/|ΣNPR| IN12/f IN56/f TP4 + IN45) 0.82909 0.66200 1.25240 0.56353 0.02262 0.81149 |f1/f2| |f2/f3| (TP1 + IN12)/TP2 (TP6 + IN56)/TP5 539.59835 0.09491 3.99994 2.69330 HOS InTL HOS/HOI InS/HOS ODT % TDT % 50.00000 47.92490 20.00000 0.33711 1.04280 1.90057 HVT51 HVT52 HVT61 HVT62 HVT62/HOI HVT62/HOS 0 0 0.00000 0.00000 0.00000 0.00000 HVT21 HVT22 HVT31 HVT32 HVT41 HVT42 7.909 0.000 0.000 0.000 0.000 0.000 |InRS61|/ |InRS62|/ TP2/TP3 TP3/TP4 InRS61 InRS62 TP6 TP6 0.11940 3.01661 2.31724 0.62602 0.38021 0.10272 PLTA PSTA NLTA NSTA SLTA SSTA −0.026 mm 0.021 mm −0.00029 0.003 mm −0.004 0.004 mm mm mm OD ID OD/ID OT IT OT/IT 11.7 mm 3.048 mm 3.8386 0.8 mm 0.1 mm 8

The values pertaining to the length of the outline curves are obtainable from the data in Table 5 and Table 6:

Third Embodiment (Primary Reference Wavelength = 555 nm) ARE ½(HEP) ARE value ARE − ½(HEP) 2(ARE/HEP) % TP ARE/TP (%) 11 1.643 1.645 0.00205 100.13% 6.493 25.33% 12 1.643 1.646 0.00313 100.19% 6.493 25.35% 21 1.643 1.642 −0.00069 99.96% 2.086 78.71% 22 1.643 1.680 0.03742 102.28% 2.086 80.54% 31 1.643 1.643 0.00010 100.01% 17.472 9.40% 32 1.643 1.646 0.00324 100.20% 17.472 9.42% 41 1.643 1.652 0.00909 100.55% 5.792 28.52% 42 1.643 1.682 0.03972 102.42% 5.792 29.05% 51 1.643 1.669 0.02584 101.57% 2.291 72.85% 52 1.643 1.649 0.00634 100.39% 2.291 72.00% 61 1.643 1.665 0.02181 101.33% 6.095 27.31% 62 1.643 1.648 0.00486 100.30% 6.095 27.03% ARS EHD ARS value ARS − EHD (ARS/EHD) % TP ARS/TP (%) 11 11.622 12.449 0.82738 107.12% 6.493 191.73% 12 8.637 8.926 0.28920 103.35% 6.493 137.47% 21 8.523 8.535 0.01144 100.13% 2.086 409.11% 22 5.561 7.587 2.02540 136.42% 2.086 363.67% 31 5.629 5.710 0.08080 101.44% 17.472 32.68% 32 3.603 3.676 0.07350 102.04% 17.472 21.04% 41 3.629 3.734 0.10503 102.89% 5.792 64.48% 42 4.460 4.963 0.50267 111.27% 5.792 85.68% 51 4.291 4.398 0.10641 102.48% 2.291 192.00% 52 4.518 4.558 0.03987 100.88% 2.291 198.98% 61 4.436 5.213 0.77727 117.52% 6.095 85.54% 62 2.548 2.721 0.17287 106.78% 6.095 44.65%

The following values for the conditional expressions can be obtained from the data in Table 5 and Table 6.

Values Related to Inflection Point of Third Embodiment (Primary Reference Wavelength = 555 nm) HIF111 10.1044 HIF111/HOI 4.0418 SGI111 3.1438 | SGI111|/(| SGI111| + TP1) 0.3262 HIF121 7.0720 HIF121/HOI 2.8288 SGI121 1.5576 |SGI121 |/(|SGI121 | + TP1) 0.1935 HIF211 6.2286 HIF211/HOI 2.4914 SGI211 0.2399 | SGI211|/(| SGI211| + TP2) 0.1031 HIF511 1.9045 HIF511/HOI 0.7618 SGI511 −0.3372 | SGI511|/(| SGI511| + TP5) 0.1283 HIF512 3.3848 HIF512/HOI 1.3539 SGI512 −0.6928 | SGI512|/(| SGI512| + TP5) 0.2322 HIF521 1.8761 HIF521/HOI 0.7504 SGI521 −0.1694 |SGI521 |/(|SGI521 | + TP5) 0.0689 HIF522 3.1016 HIF522/HOI 1.2406 SGI522 −0.3244 |SGI522 |/(|SGI522 | + TP5) 0.1241

Fourth Embodiment

Please refer to FIG. 4A, FIG. 4B and FIG. 4C. FIG. 4A is a schematic view of the optical image capturing system according to the fourth embodiment of the present invention. FIG. 4B shows the longitudinal spherical aberration curves, astigmatic field curves, and optical distortion curve of the optical image capturing system of the fourth embodiment, in the order from left to right. FIG. 4C is a transverse aberration diagram at the position of 0.7 HOI on the image plane of the optical image capturing system of the fourth embodiment. As shown in FIG. 4A, in the order from an object side to an image side, the optical image capturing system includes a first lens element 410, a second lens element 420, a third lens element 430, an aperture stop 400, a fourth lens element 440, a fifth lens element 450, a sixth lens element 460, an IR-bandstop filter 480, an image plane 490, and an image sensing device 492.

The first lens element 410 has negative refractive power and is made of plastic material. The first lens element 410 has a convex object-side surface 412 and a concave image-side surface 414, and both object-side surface 412 and image-side surface 414 are aspheric.

The second lens element 420 has negative refractive power and is made of plastic material. The second lens element 420 has a convex object-side surface 422 and a concave image-side surface 424, and both object-side surface 422 and image-side surface 424 are aspheric. The object-side surface 422 has one inflection point.

The third lens element 430 has negative refractive power and is made of plastic material. The third lens element 430 has a convex object-side surface 432 and a concave image-side surface 434, and both object-side surface 432 and image-side surface 434 are aspheric. The object-side surface 432 has one inflection point.

The fourth lens element 440 has positive refractive power and is made of plastic material. The fourth lens element 440 has a convex object-side surface 442 and a convex image-side surface 444, and both object-side surface 442 and image-side surface 444 are aspheric. The object-side surface 442 has one inflection point.

The fifth lens element 450 has positive refractive power and is made of plastic material. The fifth lens element 450 has a convex object-side surface 452 and a convex image-side surface 454, and both object-side surface 452 and image-side surface 454 are aspheric. The image-side surface 454 has one inflection point.

The sixth lens element 460 has positive refractive power and is made of plastic material. The sixth lens element 460 has a concave object-side surface 462 and a convex image-side surface 464. As a result, the back focal length thereof can be reduced, such that the size of the optical image capturing system can be kept small. In addition, the image-side surface 464 thereof has one inflection point, so the incident angle of the off-axis rays can be reduced. Therefore, the off-axis aberration can be mitigated.

The IR-bandstop filter 480 is made of glass material and is disposed between the sixth lens element 460 and the image plane 490. The IR-bandstop filter 480 does not affect the focal length of the optical image capturing system.

The contents in Tables 7 and 8 below should be incorporated into the reference of the present embodiment.

TABLE 7 Lens Parameters for the Fourth Embodiment f(focal length) = 3.894 mm; f/HEP = 1.0; HAF(half angle of view) = 32.500 deg Central Surface Thickness Refractive Abbe Focal No. Curvature Radius (mm) Material Index Number Length 0 Object 1E+18 1E+18 1 Lens 1 11.43957089 7.551 Plastic 1.661 20.40 −108.84 2 7.272587395 2.689 3 Lens 2 15.77329662 1.204 Plastic 1.565 58.00 −8.70 4 3.652720789 4.945 5 Lens 3 250.2993495 15.319 Plastic 1.661 20.40 −52.79 6 30.10406714 0.443 7 Aperture 1E+18 −0.392 Stop 8 Lens 4 11.10344619 4.121 Plastic 1.565 58.00 11.00 9 −12.30274886 1.489 10 Lens 5 6.804270353 4.696 Plastic 1.565 58.00 9.47 11 −19.11884977 0.533 12 Lens 6 −19.53609373 5.418 Plastic 1.661 20.40 151.26 13 −18.18195851 0.450 14 IR-bandstop 1E+18 0.850 BK_7 1.517 64.13 Filter 15 1E+18 0.680 16 Image 1E+18 0.003 Plane Reference wavelength = 555 nm; Shield position: none

TABLE 8 The Aspheric Coefficients of the Fourth Embodiment Table 8: Aspheric Coefficients Surface No 1 2 3 4 5 6 8 k −3.742203E−01 −3.317222E−01  1.098683E+00 −1.247371E+00  2.479424E+01  1.668624E+01 −1.210325E+01 A₄ −1.134993E−05 −2.972451E−04  2.881603E−05 2.408402E−03 −1.081163E−04  −1.771239E−04  8.607320E−04 A₆  2.143383E−07 2.667301E−06 7.230043E−08 1.548620E−05 1.702964E−06  2.140118E−05 −7.321599E−06 A₈ −2.208273E−09 5.987771E−08 −3.681970E−08  −6.379421E−07  1.054936E−07 −3.068005E−07  2.655294E−07 A₁₀  2.834721E−11 9.966839E−10 1.018979E−10 1.207509E−09 −4.275267E−09  −7.184557E−09 −1.851160E−10 A₁₂  0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00  0.000000E+00  0.000000E+00 Table 8 (cont.): Aspheric Coefficients Surface No 9 10 11 12 13 k −6.073039E+00 −2.364919E−01  6.688469E+00 1.278124E+01 1.769843E+01 A₄ −3.880301E−04 −6.788786E−05  2.161091E−04 −5.862967E−04  2.908874E−03 A₆  1.104175E−05 1.138287E−06 −2.819064E−05  5.421206E−06 −2.877374E−05  A₈ −2.678925E−07 2.125748E−08 1.839307E−06 3.945899E−07 7.152595E−06 A₁₀  1.854784E−08 6.449161E−09 −2.390240E−08  1.223898E−08 −1.897115E−07  A₁₂  0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00

In the fourth embodiment, the form of the aspheric surface equation is similar to that in the first embodiment. Besides, the definitions of parameters in following tables are similar to those in the first embodiment, so the repetitive details will not be given here.

The following values for the conditional expressions can be obtained from the data in Table 7 and Table 8.

Fourth Embodiment (Primary Reference Wavelength = 555 nm) |f/f1| |f/f2| |f/f3| |f/f4| |f/f5| |f/f6| 0.03578 0.44764 0.07377 0.35409 0.41099 0.02574 TP4/(IN34 + ΣPPR ΣNPR ΣPPR/|ΣNPR| IN12/f IN56/f TP4 + IN45) 0.87463 0.47338 1.84763 0.69059 0.13682 0.72793 |f1/f2| |f2/f3| (TP1 + IN12)/TP2 (TP6 + IN56)/TP5 12.51181 0.16480 8.50831 1.26722 HOS InTL HOS/HOI InS/HOS ODT % TDT % 50.00000 48.01690 20.00000 0.35699 1.03029 0.38760 HVT51 HVT52 HVT61 HVT62 HVT62/HOI HVT62/HOS 0.54634 0.11867 0.13165 0.00725 1.03029 0.38760 HVT21 HVT22 HVT31 HVT32 HVT41 HVT42 0.000 0.000 4.228 0.000 0.000 5.166 |InRS61|/ |InRS62|/ TP2/TP3 TP3/TP4 InRS61 InRS62 TP6 TP6 0.07857 3.71689 −0.71333 −0.03931 0.13165 0.00725 PLTA PSTA NLTA NSTA SLTA SSTA −0.010 mm 0.025 mm −0.007 mm −0.004 0.003 mm 0.006 mm mm OD ID OD/ID OT IT OT/IT 11.4 mm 3.519 mm 3.2396 0.7 mm 0.1 mm 7

The values pertaining to the length of the outline curves are obtainable from the data in Table 7 and Table 8:

Fourth Embodiment (Primary Reference Wavelength = 555 nm) ARE ½(HEP) ARE value ARE − ½(HEP) 2(ARE/HEP) % TP ARE/TP (%) 11 1.947 1.956 0.00937 100.48% 7.551 25.91% 12 1.947 1.970 0.02275 101.17% 7.551 26.09% 21 1.947 1.952 0.00500 100.26% 1.204 162.19% 22 1.947 2.046 0.09919 105.09% 1.204 170.02% 31 1.947 1.947 −0.00006 100.00% 15.319 12.71% 32 1.947 1.948 0.00127 100.07% 15.319 12.72% 41 1.947 1.957 0.00980 100.50% 4.121 47.48% 42 1.947 1.955 0.00807 100.41% 4.121 47.44% 51 1.947 1.974 0.02699 101.39% 4.696 42.03% 52 1.947 1.950 0.00330 100.17% 4.696 41.53% 61 1.947 1.951 0.00414 100.21% 5.418 36.01% 62 1.947 1.948 0.00135 100.07% 5.418 35.96% ARS EHD ARS value ARS − EHD (ARS/EHD) % TP ARS/TP (%) 11 11.311 14.360 3.04896 126.96% 7.551 190.18% 12 6.897 8.485 1.58867 123.04% 7.551 112.38% 21 6.831 7.068 0.23790 103.48% 1.204 587.30% 22 4.731 6.567 1.83588 138.80% 1.204 545.66% 31 4.696 4.696 −0.00042 99.99% 15.319 30.65% 32 4.391 4.415 0.02398 100.55% 15.319 28.82% 41 5.358 5.701 0.34334 106.41% 4.121 138.34% 42 5.309 5.399 0.09015 101.70% 4.121 131.00% 51 5.370 6.163 0.79234 114.75% 4.696 131.23% 52 4.732 4.774 0.04181 100.88% 4.696 101.65% 61 4.360 4.445 0.08518 101.95% 5.418 82.04% 62 3.019 3.021 0.00226 100.08% 5.418 55.76%

The following values for the conditional expressions can be obtained from the data in Table 7 and Table 8.

Values Related to Inflection Point of Fourth Embodiment (Primary Reference Wavelength = 555 nm) HIF211 6.7010 HIF211/HOI 2.6804 SGI211 1.5256 | SGI211|/(| SGI211| + TP2) 0.5590 HIF311 1.9689 HIF311/HOI 0.7876 SGI311 0.0062 | SGI311|/(| SGI311| + TP3) 0.0004 HIF421 3.9093 HIF421/HOI 1.5637 SGI421 −0.6075 |SGI421 |/(|SGI421 | + TP4) 0.1285 HIF521 3.9199 HIF521/HOI 1.5680 SGI521 −0.4101 |SGI521 |/(|SGI521 | + TP5) 0.0803 HIF621 1.3722 HIF621/HOI 0.5489 SGI621 −0.0430 |SGI621 |/(|SGI621 | + TP6) 0.0079

Fifth Embodiment

Please refer to FIG. 5A, FIG. 5B and FIG. 5C. FIG. 5A is a schematic view of the optical image capturing system according to the fifth embodiment of the present invention. FIG. 5B shows the longitudinal spherical aberration curves, astigmatic field curves, and optical distortion curve of the optical image capturing system of the fifth embodiment, in the order from left to right. FIG. 5C is a transverse aberration diagram at the position of 0.7 HOI on the image plane of the optical image capturing system of the fifth embodiment. As shown in FIG. 5A, in the order from an object side to an image side, the optical image capturing system includes a first lens element 510, a second lens element 520, a third lens element 530, an aperture stop 500, a fourth lens element 540, a fifth lens element 550, a sixth lens element 560, an IR-bandstop filter 580, an image plane 590, and an image sensing device 592.

The first lens element 510 has negative refractive power and is made of plastic material. The first lens element 510 has a convex object-side surface 512 and a concave image-side surface 514, and both object-side surface 512 and image-side surface 514 are aspheric. The object-side surface 512 has one inflection point.

The second lens element 520 has negative refractive power and is made of plastic material. The second lens element 520 has a concave object-side surface 522 and a convex image-side surface 524, and both object-side surface 522 and image-side surface 524 are aspheric. The object-side surface 522 and the image-side surface 524 both have two inflection points.

The third lens element 530 has positive refractive power and is made of plastic material. The third lens element 530 has a convex object-side surface 532 and a convex image-side surface 534, and both object-side surface 532 and image-side surface 534 are aspheric.

The fourth lens element 540 has positive refractive power and is made of plastic material. The fourth lens element 540 has a convex object-side surface 542 and a convex image-side surface 544, and both object-side surface 542 and image-side surface 544 are aspheric. The image-side surface 544 has one inflection point.

The fifth lens element 550 has negative refractive power and is made of plastic material. The fifth lens element 550 has a convex object-side surface 552 and a concave image-side surface 554, and both object-side surface 552 and image-side surface 554 are aspheric. The object-side surface 552 has one inflection point, while the image-side surface 554 has two inflection points.

The sixth lens element 560 has positive refractive power and is made of plastic material. The sixth lens element 560 has a convex object-side surface 562 and a convex image-side surface 564. As a result, the back focal length thereof can be reduced, such that the size of the optical image capturing system can be kept small. In addition, the image-side surface 564 thereof has one inflection point, so the incident angle of the off-axis rays can be reduced, and the off-axis aberration can be mitigated.

The IR-bandstop filter 580 is made of glass material and is disposed between the sixth lens element 560 and the image plane 590. The IR-bandstop filter 580 does not affect the focal length of the optical image capturing system.

The contents in Tables 9 and 10 below should be incorporated into the reference of the present embodiment.

TABLE 9 Lens Parameters for the Fifth Embodiment f(focal length) = 2.748 mm; f/HEP = 1.2; HAF(half angle of view) = 42.502 deg Central Surface Thickness Refractive Abbe Focal No. Curvature Radius (mm) Material Index Number Length 0 Object 1E+18 1E+18 1 Lens 1 301.1005645 6.269 Plastic 1.565 58.00 −10.41 2 5.745752053 2.723 3 Lens 2 −7.005570118 5.462 Plastic 1.607 26.60 −209.59 4 −9.60247717 0.168 5 Lens 3 33.6103138 10.572 Plastic 1.565 58.00 9.60 6 −5.750317233 0.626 7 Aperture 1E+18 0.583 Stop 8 Lens 4 16.70367554 1.739 Plastic 1.565 58.00 4.86 9 −3.174828555 0.306 10 Lens 5 4.155376012 0.494 Plastic 1.661 20.40 −4.24 11 1.603432149 0.299 12 Lens 6 14.30984853 3.790 Plastic 1.565 58.00 7.67 13 −5.64744044 0.450 14 IR-bandstop 1E+18 0.850 BK_7 1.517 64.13 Filter 15 1E+18 0.525 16 Image 1E+18 0.011 Plane Reference wavelength = 555 nm; Shield position: none

TABLE 10 The Aspheric Coefficients of the Fifth Embodiment Table 10: Aspheric Coefficients Surface No. 1 2 3 4 5 6 8 k −5.000000E+01 −2.176461E+00  −3.642330E+00  −9.521802E+00  5.000000E+01 −8.665822E+00 2.591089E+01 A₄ −1.314860E−05 1.259804E−03 2.856209E−05 3.016340E−04 4.718922E−04 −1.233495E−03 8.275085E−03 A₆ −3.368157E−07 −1.652464E−05  −1.275345E−05  6.088444E−05 3.896370E−05  2.950482E−04 −3.162059E−04  A₈  3.136086E−08 2.866786E−06 7.268180E−07 −3.856433E−07  1.349286E−06 −2.720709E−05 5.164484E−05 A₁₀ −4.570991E−10 6.786929E−09 8.281181E−08 2.383510E−08 −1.195769E−07   7.861083E−07 −2.673381E−06  A₁₂  0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00 0.000000E+00  0.000000E+00 0.000000E+00 Table 10 (cont.): Aspheric Coefficients Surface No. 9 10 11 12 13 k −1.213131E+01 −2.169093E+01 −4.504733E+00 −4.902239E+01  −2.490490E+01  A₄  4.713512E−03 −2.158061E−02 −2.440822E−02 1.307025E−02 1.829504E−02 A₆ −1.890321E−04  1.930925E−04  4.584204E−03 1.111520E−03 1.381955E−03 A₈  7.746840E−05  5.233327E−04  2.340526E−05 8.634561E−06 1.157153E−03 A₁₀ −7.069370E−06 −4.512367E−05 −1.934626E−05 −2.523925E−05  −2.153835E−04  A₁₂  0.000000E+00  0.000000E+00  0.000000E+00 0.000000E+00 0.000000E+00

In the fifth embodiment, the form of the aspheric surface equation is similar to that in the first embodiment. Besides, the definitions of parameters in following tables are similar to those in the first embodiment, so the repetitive details will not be given here.

The following values for the conditional expressions can be obtained from the data in Table 9 and Table 10:

Fifth Embodiment (Primary Reference Wavelength = 555 nm) |f/f1| |f/f2| |f/f3| |f/f4| |f/f5| |f/f6| 0.26388 0.01311 0.28640 0.56540 0.64753 0.35825 TP4/(IN34 + ΣPPR ΣNPR ΣPPR/|ΣNPR| IN12/f IN56/f TP4 + IN45) 1.47681 0.65776 2.24520 0.99093 0.10866 0.53449 |f1/f2| |f2/f3| (TP1 + IN12)/TP2 (TP6 + IN56)/TP5 0.04969 21.84148 1.64640 8.27509 HOS InTL HOS/HOI InS/HOS ODT % TDT % 34.86630 33.03060 13.94652 0.25944 1.01209 1.92208 HVT51 HVT52 HVT61 HVT62 HVT62/HOI HVT62/HOS 1.35856 0 0.00000 1.14818 0.45927 0.03293 HVT21 HVT22 HVT31 HVT32 HVT41 HVT42 0.000 3.524 0.000 0.000 0.000 2.444 |InRS61|/ |InRS62|/ TP2/TP3 TP3/TP4 InRS61 InRS62 TP6 TP6 0.51660 6.07854 0.60164 0.24258 0.15876 0.06401 PLTA PSTA NLTA NSTA SLTA SSTA 0.003 mm 0.00049 0.009 mm −0.007 0.007 mm 0.001 mm mm mm OD ID OD/ID OT IT OT/TT 7.6 mm 2.532 mm 3.0016 0.7 mm 0.1 mm 7

The values pertaining to the length of the outline curves are obtainable from the data in Table 9 and Table 10:

Fifth Embodiment (Primary Reference Wavelength = 555 nm) ARE ½(HEP) ARE value ARE − ½(HEP) 2(ARE/HEP) % TP ARE/TP (%) 11 1.145 1.145 −0.00011 99.99% 6.269 18.27% 12 1.145 1.153 0.00755 100.66% 6.269 18.39% 21 1.145 1.150 0.00476 100.42% 5.462 21.05% 22 1.145 1.147 0.00235 100.21% 5.462 21.01% 31 1.145 1.145 0.00014 100.01% 10.572 10.83% 32 1.145 1.152 0.00650 100.57% 10.572 10.89% 41 1.145 1.147 0.00182 100.16% 1.739 65.94% 42 1.145 1.157 0.01217 101.06% 1.739 66.54% 51 1.145 1.149 0.00357 100.31% 0.494 232.51% 52 1.145 1.183 0.03786 103.31% 0.494 239.45% 61 1.145 1.148 0.00300 100.26% 3.790 30.30% 62 1.145 1.147 0.00174 100.15% 3.790 30.26% ARS EHD ARS value ARS − EHD (ARS/EHD) % TP ARS/TP (%) 11 7.515 7.516 0.00059 100.01% 6.269 119.89% 12 3.993 4.459 0.46613 111.67% 6.269 71.14% 21 3.971 4.084 0.11306 102.85% 5.462 74.78% 22 3.940 3.964 0.02446 100.62% 5.462 72.59% 31 4.042 4.115 0.07334 101.81% 10.572 38.92% 32 3.058 3.129 0.07072 102.31% 10.572 29.60% 41 2.850 3.065 0.21566 107.57% 1.739 176.24% 42 2.703 2.729 0.02563 100.95% 1.739 156.88% 51 2.472 2.485 0.01273 100.51% 0.494 502.94% 52 2.288 2.439 0.15070 106.59% 0.494 493.64% 61 2.330 2.463 0.13345 105.73% 3.790 65.00% 62 2.032 2.105 0.07330 103.61% 3.790 55.55%

The following values for the conditional expressions can be obtained from the data in Table 9 and Table 10.

Values Related to Inflection Point of Fifth Embodiment (Primary Reference Wavelength = 555 nm) HIF111 5.8471 HIF111/HOI 2.3388 SGI111 0.0492 | SGI111|/(| SGI111| + TP1) 0.0078 HIF211 3.1388 HIF211/HOI 1.2555 SGI211 −0.6235 | SGI211|/(| SGI211| + TP2) 0.1025 HIF221 2.2065 HIF221/HOI 0.8826 SGI221 −0.2160 |SGI221 |/(|SGI221 | + TP2) 0.0380 HIF421 1.1833 HIF421/HOI 0.4733 SGI421 −0.1609 |SGI421 |/(|SGI421 | + TP4) 0.0847 HIF511 0.6962 HIF511/HOI 0.2785 SGI511 0.0467 | SGI511|/(| SGI511| + TP5) 0.0863 HIF521 1.0537 HIF521/HOI 0.4215 SGI521 0.2440 |SGI521 |/(|SGI521 | + TP5) 0.3306 HIF522 1.3251 HIF522/HOI 0.5300 SGI522 0.3348 |SGI522 |/(|SGI522 | + TP5) 0.4039 HIF621 0.6750 HIF621/HOI 0.2700 SGI621 −0.0334 |SGI621 |/(|SGI621 | + TP6) 0.0087

Sixth Embodiment

Please refer to FIG. 6A, FIG. 6B and FIG. 6C. FIG. 6A is a schematic view of the optical image capturing system according to the sixth embodiment of the present invention. FIG. 6B shows the longitudinal spherical aberration curves, astigmatic field curves, and optical distortion curve of the optical image capturing system of the sixth embodiment, in the order from left to right. FIG. 6C is a transverse aberration diagram at the position of 0.7 HOI on the image plane of the optical image capturing system of the sixth embodiment. As shown in FIG. 6A, in the order from an object side to an image side, the optical image capturing system includes a first lens element 610, a second lens element 620, a third lens element 630, an aperture stop 600, a fourth lens element 640, a fifth lens element 650, a sixth lens element 660, an IR-bandstop filter 680, an image plane 690, and an image sensing device 692.

The first lens element 610 has negative refractive power and is made of plastic material. The first lens element 610 has a convex object-side surface 612 and a concave image-side surface 614, and both object-side surface 612 and image-side surface 614 are aspheric.

The second lens element 620 has negative refractive power and is made of plastic material. The second lens element 620 has a convex object-side surface 622 and a concave image-side surface 624, and both object-side surface 622 and image-side surface 624 are aspheric.

The third lens element 630 has negative refractive power and is made of plastic material. The third lens element 630 has a convex object-side surface 632 and a concave image-side surface 634, and both object-side surface 632 and image-side surface 634 are aspheric. The object-side surface 632 thereof has one inflection point.

The fourth lens element 640 has positive refractive power and is made of plastic material. The fourth lens element 640 has a convex object-side surface 642 and a convex image-side surface 644, and both object-side surface 642 and image-side surface 644 are aspheric.

The fifth lens element 650 has positive refractive power and is made of plastic material. The fifth lens element 650 has a convex object-side surface 652 and a convex image-side surface 654, and both object-side surface 652 and image-side surface 654 are aspheric.

The sixth lens element 660 has negative refractive power and is made of plastic material. The sixth lens element 660 has a convex object-side surface 662 and a concave image-side surface 664. The object-side surface 662 and the image-side surface 664 thereof both have two inflection points. As a result, the back focal length thereof can be reduced, such that the size of the optical image capturing system can be kept small. In addition, the incident angle of the off-axis rays can be reduced, and the off-axis aberration can be mitigated.

The IR-bandstop filter 680 is made of glass material and is disposed between the sixth lens element 660 and the image plane 690. The IR-bandstop filter 680 does not affect the focal length of the optical image capturing system.

The contents in Tables 11 and 12 below should be incorporated into the reference of the present embodiment.

TABLE 11 Lens Parameters for the Sixth Embodiment f(focal length) = 3.225 mm; f/HEP = 1.2; HAF(half angle of view) = 37.500 deg Central Surface Thickness Refractive Abbe Focal No. Curvature Radius (mm) Material Index Number Length 0 Object 1E+18 1E+18 1 Lens 1 12.31185772 7.502 Plastic 1.661 20.40 −74.61 2 7.463590564 5.278 3 Lens 2 83.06630897 1.268 Plastic 1.565 58.00 −7.25 4 3.895236001 3.078 5 Lens 3 29.67245586 15.771 Plastic 1.661 20.40 −34.99 6 10.28422833 0.445 7 Aperture 1E+18 −0.395 Stop 8 Lens 4 7.569163454 4.107 Plastic 1.565 58.00 6.88 9 −6.459440511 2.168 10 Lens 5 7.958298001 7.923 Plastic 1.565 58.00 10.59 11 −15.62497503 0.424 12 Lens 6 11.57798646 1.088 Plastic 1.607 26.60 −34.13 13 7.179551234 0.450 14 IR-bandstop 1E+18 0.850 BK_7 1.517 64.13 Filter 15 1E+18 0.041 16 Image 1E+18 0.002 Plane Reference wavelength = 555 nm; Shield position: none

TABLE 12 The Aspheric Coefficients of the Sixth Embodiment Table 12: Aspheric Coefficients Surface No. 1 2 3 4 5 6 8 k 2.454951E−02 −3.675013E−01 4.837454E+01 −1.340629E+00  −2.961382E+01 −3.323318E+01  −1.769298E+01  A₄ 4.179710E−05  3.904135E−04 1.855671E−06 5.979660E−04 −3.751922E−04 2.137938E−03 2.398557E−03 A₆ −1.573750E−07  −1.655580E−06 −3.827298E−07  1.766548E−05 −6.171281E−07 −9.820087E−05  −1.802233E−04  A₈ 5.716278E−10 −1.108715E−08 1.730880E−09 3.197844E−08 −1.748656E−07 3.992700E−07 3.500377E−06 A₁₀ −5.736341E−12   9.177271E−11 1.968384E−10 −1.108824E−08  −1.905137E−08 2.746124E−07 8.176164E−08 A₁₂ 0.000000E+00  0.000000E+00 0.000000E+00 0.000000E+00  0.000000E+00 0.000000E+00 0.000000E+00 Table 12 (cont.): Aspheric Coefficients Surface No. 10 11 12 13 14 k 4.582609E−01 −1.075606E+00 8.662679E+00 −4.856837E+01  2.327291E+00 A₄ 9.582553E−04  9.082603E−04 2.230223E−03 −3.215774E−03 −1.085740E−02 A₆ −4.123740E−05  −4.079009E−05 −1.620592E−04   1.495148E−05 −1.211607E−04 A₈ 1.642442E−06  1.525297E−06 −3.323095E−05  −2.106397E−04 −3.431911E−05 A₁₀ −6.905582E−08  −4.032515E−08 2.387815E−06  1.809508E−05  8.619341E−06 A₁₂ 0.000000E+00  0.000000E+00 0.000000E+00  0.000000E+00  0.000000E+00

In the sixth embodiment, the form of the aspheric surface equation is similar to that in the first embodiment. Besides, the definitions of parameters in following tables are similar to those in the first embodiment, so the repetitive details will not be given here.

The following values for the conditional expressions can be obtained from the data in Table 11 and Table 12:

Sixth Embodiment (Primary Reference Wavelength = 555 nm) |f/f1| |f/f2| |f/f3| |f/f4| |f/f5| |f/f6| 0.04323 0.44471 0.09218 0.46898 0.30457 0.09451 TP4/(IN34 + ΣPPR ΣNPR ΣPPR/|ΣNPR| IN12/f IN56/f TP4 + IN45) 0.81678 0.63140 1.29359 1.63643 0.13138 0.64936 |f1/f2| |f2/f3| (TP1 + IN12)/TP2 (TP6 + IN56)/TP5 10.28701 0.20728 10.07973 0.19082 HOS InTL HOS/HOI InS/HOS ODT % TDT % 50.00000 48.65630 20.00000 0.33316 1.03980 1.05058 HVT51 HVT52 HVT61 HVT62 HVT62/HOI HVT62/HOS 0 0 1.67318 1.86052 0.74421 0.03721 HVT21 HVT22 HVT31 HVT32 HVT41 HVT42 0.000 0.000 3.593 0.000 0.000 0.000 |InRS61|/ |InRS62|/ TP2/TP3 TP3/TP4 InRS61 InRS62 TP6 TP6 0.08040 3.84011 −0.23854 0.04413 0.21923 0.04056 PLTA PSTA NLTA NSTA SLTA SSTA 0.003 mm 0.008 mm −0.003 mm 0.001 mm 0.005 mm 0.001 mm OD ID OD/ID OT IT OT/IT 12 mm 3.209 mm 3.7395 0.3 mm 0.15 mm 2

The values pertaining to the length of the outline curves are obtainable from the data in Table 11 and Table 12:

Sixth Embodiment (Primary Reference Wavelength = 555 nm) ARE ½(HEP) ARE value ARE − ½(HEP) 2(ARE/HEP) % TP ARE/TP (%) 11 1.344 1.346 0.00178 100.13% 7.502 17.94% 12 1.344 1.350 0.00658 100.49% 7.502 18.00% 21 1.344 1.343 −0.00085 99.94% 1.268 105.93% 22 1.344 1.369 0.02518 101.87% 1.268 107.98% 31 1.344 1.343 −0.00051 99.96% 15.771 8.52% 32 1.344 1.346 0.00259 100.19% 15.771 8.54% 41 1.344 1.349 0.00534 100.40% 4.107 32.85% 42 1.344 1.353 0.00861 100.64% 4.107 32.93% 51 1.344 1.350 0.00580 100.43% 7.923 17.04% 52 1.344 1.344 0.00043 100.03% 7.923 16.97% 61 1.344 1.344 0.00048 100.04% 1.088 123.56% 62 1.344 1.347 0.00296 100.22% 1.088 123.78% ARS EHD ARS value ARS − EHD (ARS/EHD) % TP ARS/TP (%) 11 11.974 17.054 5.08036 142.43% 7.502 227.33% 12 7.547 10.012 2.46532 132.67% 7.502 133.46% 21 7.498 7.520 0.02206 100.29% 1.268 593.08% 22 4.730 5.828 1.09764 123.21% 1.268 459.64% 31 4.711 4.727 0.01522 100.32% 15.771 29.97% 32 3.096 3.139 0.04301 101.39% 15.771 19.90% 41 3.300 3.363 0.06303 101.91% 4.107 81.88% 42 4.019 4.342 0.32258 108.03% 4.107 105.72% 51 4.289 4.541 0.25225 105.88% 7.923 57.32% 52 3.212 3.255 0.04317 101.34% 7.923 41.08% 61 2.846 2.902 0.05665 101.99% 1.088 266.73% 62 2.709 2.717 0.00805 100.30% 1.088 249.70%

The following values for the conditional expressions can be obtained from the data in Table 11 and Table 12:

Values Related to Inflection Point of Sixth Embodiment (Primary Reference Wavelength = 555 nm) HIF311 2.2838 HIF311/HOI 0.9135 SGI311 0.0740 | SGI311|/(| SGI311| + TP3) 0.0047 HIF611 1.0355 HIF611/HOI 0.4142 SGI611 0.0387 | SGI611|/(| SGI611| + TP6) 0.0343 HIF612 2.7568 HIF612/HOI 1.1027 SGI612 −0.1985 | SGI612|/(| SGI612| + TP6) 0.1543

Although the present invention is disclosed by the aforementioned embodiments, those embodiments do not serve to limit the scope of the present invention. A person skilled in the art could perform various alterations and modifications to the present invention, without departing from the spirit and the scope of the present invention. Hence, the scope of the present invention should be defined by the following appended claims.

Despite the fact that the present invention is specifically presented and illustrated with reference to the exemplary embodiments thereof, it should be apparent to a person skilled in the art that, various modifications could be performed to the forms and details of the present invention, without departing from the scope and spirit of the present invention defined in the claims and their equivalence. 

What is claimed is:
 1. An optical image capturing system, from an object side to an image side, comprising: a first lens element with refractive power; a second lens element with refractive power; a third lens element with refractive power; a fourth lens element with refractive power; a fifth lens element with refractive power; a sixth lens element with refractive power; an image plane; and a lens positioning element; wherein the lens positioning element is hollow in order to accommodate any lens elements and align the lens elements along an optical axis; the lens positioning element comprises an object-side end and an image-side end; the object-side end is adjacent to the object side and is disposed with a first opening; the image-side end is adjacent to the image side and is disposed with a second opening; an outer wall of the lens positioning element comprises at least two tangent planes, and each of the tangent planes is disposed with at least one sprue mark; at least one lens element among the first to the sixth lens elements has positive refractive power; focal lengths of the first through the sixth lens elements are f1, f2, f3, f4, f5 and f6, respectively; a focal length of the optical image capturing system is f, an entrance pupil diameter of the optical image capturing system is HEP, and a distance on the optical axis from an object-side surface of the first lens element to the image plane is HOS; a distance on the optical axis from the object-side surface of the first lens element to an image-side surface of the sixth lens element is InTL; half of a maximum angle of view of the optical image capturing system is HAF; an outline curve starting from an axial point on any surface of any one of the six lens elements, tracing along an outline of the surface, and ending at a coordinate point on the surface that has a vertical height of ½ entrance pupil diameter from the optical axis, has a length denoted by ARE; conditions as follows are satisfied: 1≦f/HEP≦10, 0 deg≦HAF≦150 deg, and 0.9≦2(ARE/HEP)≦2.0.
 2. The optical image capturing system of claim 1, wherein the outer wall of the lens positioning element comprises at least three tangent planes, and each of the tangent planes has at least one sprue mark.
 3. The optical image capturing system of claim 1, wherein an inner diameter of the first opening is OD, an inner diameter of the second opening is ID, and the following conditions are satisfied: 0.1≦OD/ID≦10.
 4. The optical image capturing system of claim 1, wherein a minimum thickness of the object-side end is OT and a minimum thickness of the image-side end is IT, and the following condition is satisfied: 0.1≦OT/IT≦10.
 5. The optical image capturing system of claim 1, wherein TV distortion for image formation in the optical image capturing system is TDT; the optical image capturing system has a maximum image height HOI on the image plane perpendicular to the optical axis, transverse aberration of a longest operation wavelength of a positive direction tangential fan of the optical image capturing system passing through an edge of an entrance pupil and incident at a position of 0.7 HOI on the image plane is denoted by PLTA, and transverse aberration of a shortest operation wavelength of the positive direction tangential fan of the optical image capturing system passing through the edge of the entrance pupil and incident at the position of 0.7 HOI on the image plane is denoted by PSTA; transverse aberration of the longest operation wavelength of a negative direction tangential fan of the optical image capturing system passing through the edge of the entrance pupil and incident at the position of 0.7 HOI on the image plane is denoted by NLTA, and transverse aberration of the shortest operation wavelength of a negative direction tangential fan of the optical image capturing system passing through the edge of the entrance pupil and incident at the position of 0.7 HOI on the image plane is denoted by NSTA; transverse aberration of the longest operation wavelength of a sagittal fan of the optical image capturing system passing through the edge of the entrance pupil and incident at the position of 0.7 HOI on the image plane is denoted by SLTA, transverse aberration of the shortest operation wavelength of the sagittal fan of the optical image capturing system passing through the edge of the entrance pupil and incident at the position of 0.7 HOI on the image plane is denoted by SSTA; conditions as follows are satisfied: PLTA≦100 μm; PSTA≦100 μm; NLTA≦100 μm; NSTA≦100 μm; SLTA≦100 μm; and SSTA≦100 μm; and |TDT|<100%.
 6. The optical image capturing system of claim 1, wherein the image plane is a plane or a curved surface.
 7. The optical image capturing system of claim 1, wherein the outline curve starting from the axial point on the object-side surface of the sixth lens element, tracing along the outline of the object-side surface, and ending at the coordinate point on the surface that has the vertical height of ½ entrance pupil diameter from the optical axis, has the length denoted by ARE61; the outline curve starting from the axial point on the image-side surface of the sixth lens element, tracing along the outline of the image-side surface, and ending at the coordinate point on the surface that has a vertical height of ½ entrance pupil diameter from the optical axis, has the length denoted by ARE62; a central thickness of the sixth lens element on the optical axis is TP6, which satisfies conditions as follows: 0.05≦ARE61/TP6≦25 and 0.05≦ARE62/TP6≦25.
 8. The optical image capturing system of claim 1, wherein the outline curve starting from the axial point on the object-side surface of the fifth lens element, tracing along the outline of the object-side surface, and ending at the coordinate point on the surface that has the vertical height of ½ entrance pupil diameter from the optical axis, has the length denoted by ARE51; the outline curve starting from the axial point on the image-side surface of the fifth lens element, tracing along the outline of the image-side surface, and ending at the coordinate point on the surface that has a vertical height of ½ entrance pupil diameter from the optical axis, has the length denoted by ARE52; a central thickness of the fifth lens element on the optical axis is TP5, which satisfies conditions as follows: 0.05≦ARE51/TP5≦25 and 0.05≦ARE52/TP5≦25.
 9. The optical image capturing system of claim 1, further comprising an aperture stop; wherein a distance from the aperture stop to the image plane on the optical axis is InS, which satisfies condition as follows: 0.2≦InS/HOS≦1.1.
 10. An optical image capturing system, from an object side to an image side, comprising: a first lens element with refractive power; a second lens element with refractive power; a third lens element with refractive power; a fourth lens element with refractive power; a fifth lens element with refractive power; a sixth lens element with refractive power; an image plane; and a lens positioning element; wherein the lens positioning element is hollow to accommodate any lens elements and align the lens elements along an optical axis; the lens positioning element comprises an object-side end and an image-side end; the object-side end is adjacent to the object side and is disposed with a first opening, and the image-side end is adjacent to the image side and is disposed with a second opening; an outer wall of the lens positioning element comprises at least two tangent planes, and each of the tangent planes has at least one sprue mark; the optical image capturing system comprises six lens elements with refractive powers; at least one surface of at least one lens element among the first to the sixth lens elements has at least one inflection point; focal lengths of the first through the sixth lens elements are f1, f2, f3, f4, f5 and f6, respectively; a focal length of the optical image capturing system is f, an entrance pupil diameter of the optical image capturing system is HEP, and a distance on the optical axis from the object-side surface of the first lens element to the image plane is HOS; a distance on the optical axis from the object-side surface of the first lens element to the image-side surface of the sixth lens element is InTL; half of a maximum angle of view of the optical image capturing system is HAF; an outline curve starting from an axial point on any surface of any one of the six lens elements, tracing along an outline of the surface, and ending at a coordinate point on the surface that has a vertical height of ½ entrance pupil diameter from the optical axis, has a length denoted by ARE; conditions as follows are satisfied: 1≦f/HEP≦10, 0 deg≦HAF≦150 deg, and 0.9≦2(ARE/HEP)≦2.0.
 11. The optical image capturing system of claim 10, wherein the outer wall of the lens positioning element comprises at least three tangent planes, and each of the tangent planes has at least one sprue mark.
 12. The optical image capturing system of claim 10, wherein an inner diameter of the first opening is OD, an inner diameter of the second opening is ID, and the following conditions are satisfied: 0.1≦OD/ID≦10.
 13. The optical image capturing system of claim 10, wherein a minimum thickness of the object-side end is OT and a minimum thickness of the image-side end is IT, and the following condition is satisfied: 0.1≦OT/IT≦10.
 14. The optical image capturing system of claim 10, wherein a maximum effective half diameter of any surface of any one of the six lens elements is denoted by EHD; an outline curve starting from the axial point on any surface of any one of those lens elements, tracing along an outline of the surface, and ending at a point which defines the maximum effective half diameter, has a length denoted by ARS; conditions as follows are satisfied: 0.9≦ARS/EHD≦2.0.
 15. The optical image capturing system of claim 10, wherein the optical image capturing system has a maximum image height HOI on the image plane perpendicular to the optical axis, transverse aberration of a longest operation wavelength of a positive direction tangential fan of the optical image capturing system passing through an edge of an entrance pupil and incident at a position of 0.7 HOI on the image plane is denoted by PLTA, and transverse aberration of a shortest operation wavelength of the positive direction tangential fan of the optical image capturing system passing through the edge of the entrance pupil and incident at the position of 0.7 HOI on the image plane is denoted by PSTA; transverse aberration of the longest operation wavelength of a negative direction tangential fan of the optical image capturing system passing through the edge of the entrance pupil and incident at the position of 0.7 HOI on the image plane is denoted by NLTA, and transverse aberration of the shortest operation wavelength of a negative direction tangential fan of the optical image capturing system passing through the edge of the entrance pupil and incident at the position of 0.7 HOI on the image plane is denoted by NSTA; transverse aberration of the longest operation wavelength of a sagittal fan of the optical image capturing system passing through the edge of the entrance pupil and incident at the position of 0.7 HOI on the image plane is denoted by SLTA, transverse aberration of the shortest operation wavelength of the sagittal fan of the optical image capturing system passing through the edge of the entrance pupil and incident at the position of 0.7 HOI on the image plane is denoted by SSTA; conditions as follows are satisfied: PLTA≦50 μm; PSTA≦50 μm; NLTA≦50 μm; NSTA≦50 μm; SLTA≦50 μm; and SSTA≦50 μm.
 16. The optical image capturing system of claim 10, wherein a distance on the optical axis between the first lens element and the second lens element is IN12, which satisfies condition as follows: 0<IN12/f≦60.
 17. The optical image capturing system of claim 10, wherein a distance on the optical axis between the fifth lens element and the sixth lens element is IN56; central thicknesses of the fifth and sixth lens elements on the optical axis are TP5 and TP6, respectively, and condition as follows is satisfied: 0.1≦(TP6+IN56)/TP5≦50.
 18. The optical image capturing system of claim 10, wherein a distance on the optical axis between the first lens element and the second lens element is IN12; central thicknesses of the first and second lens elements on the optical axis are TP1 and TP2, respectively, and condition as follows is satisfied: 0.1≦(TP1+IN12)/TP2≦50.
 19. The optical image capturing system of claim 10, wherein at least one lens element among the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element and the sixth lens element is a filtering element of light with wavelength of less than 500 nm.
 20. An optical image capturing system, from an object side to an image side, comprising: a first lens element with refractive power; a second lens element with refractive power; a third lens element with refractive power; a fourth lens element with refractive power; a fifth lens element with refractive power; a sixth lens element with refractive power; an image plane; and a lens positioning element; wherein the lens positioning element is hollow to accommodate any lens elements and align the lens elements along an optical axis; the lens positioning element comprises an object-side end and an image-side end; the object-side end is adjacent to the object side and is disposed with a first opening, and the image-side end is adjacent to the image side and is disposed with a second opening; an outer wall of the lens positioning element comprises at least three tangent planes, and each of the tangent planes has at least one sprue mark; the optical image capturing system comprises six lens elements with refractive powers; at least two lens elements among the first to the sixth lens elements have at least one inflection point on at least one surface thereof; focal lengths of the first through the sixth lens elements are f1, f2, f3, f4, f5 and f6, respectively; a focal length of the optical image capturing system is f, an entrance pupil diameter of the optical image capturing system is HEP, and a distance on the optical axis from the object-side surface of the first lens element to the image plane is HOS; a distance on the optical axis from the object-side surface of the first lens element to the image-side surface of the sixth lens element is InTL; half of a maximum angle of view of the optical image capturing system is HAF; an outline curve starting from an axial point on any surface of any one of the six lens elements, tracing along an outline of the surface, and ending at a coordinate point on the surface that has a vertical height of ½ entrance pupil diameter from the optical axis, has a length denoted by ARE; conditions as follows are satisfied: 1≦f/HEP≦3, 0 deg≦HAF≦150 deg, and 0.9≦2(ARE/HEP)≦2.0.
 21. The optical image capturing system of claim 20, wherein an inner diameter of the first opening is OD, an inner diameter of the second opening is ID, and the following conditions are satisfied: 0.1≦OD/ID≦10.
 22. The optical image capturing system of claim 20, wherein a minimum thickness of the object-side end is OT and a minimum thickness of the image-side end is IT, and the following condition is satisfied: 1≦OT/IT≦10.
 23. The optical image capturing system of claim 20, wherein the outline curve starting from the axial point on the object-side surface of the sixth lens element, tracing along the outline of the object-side surface, and ending at the coordinate point on the surface that has the vertical height of ½ entrance pupil diameter from the optical axis, has the length denoted by ARE61; the outline curve starting from the axial point on the image-side surface of the sixth lens elements, tracing along the outline of the image-side surface, and ending at the coordinate point on the surface that has a vertical height of ½ entrance pupil diameter from the optical axis, has the length denoted by ARE62; a central thickness of the sixth lens element on the optical axis is TP6, which satisfies conditions as follows: 0.05≦ARE61/TP6≦25 and 0.05≦ARE62/TP6≦25.
 24. The optical image capturing system of claim 1, wherein the outline curve starting from the axial point on the object-side surface of the fifth lens element, tracing along the outline of the object-side surface, and ending at the coordinate point on the surface that has the vertical height of ½ entrance pupil diameter from the optical axis, has the length denoted by ARE51; the outline curve starting from the axial point on the image-side surface of the fifth lens elements, tracing along the outline of the image-side surface, and ending at the coordinate point on the surface that has a vertical height of ½ entrance pupil diameter from the optical axis, has the length denoted by ARE52; a central thickness of the fifth lens element on the optical axis is TP5, which satisfies conditions as follows: 0.05≦ARE51/TP5≦25 and 0.05≦ARE52/TP5≦25.
 25. The optical image capturing system of claim 20, further comprising an aperture stop, an image sensing device, and a driving module, wherein the image sensing device is disposed on the image plane, a distance on the optical axis from the aperture stop to the image plane is InS, and the driving module is capable of coupling with the six lens elements and enabling movements of those lens elements; conditions as follows are satisfied: 0.2≦InS/HOS≦1.1. 